{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). 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"insights-proxy/insights-proxy-container-rhel9", "relates_to_product_reference": "red_hat_lightspeed_proxy_1" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-42530", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "discovery_date": "2026-06-17T16:02:06.547760+00:00", "flags": [ { "label": "vulnerable_code_not_present", "product_ids": [ "red_hat_enterprise_linux_10:nginx", "red_hat_enterprise_linux_10:nginx-all-modules", "red_hat_enterprise_linux_10:nginx-core", "red_hat_enterprise_linux_10:nginx-filesystem", "red_hat_enterprise_linux_10:nginx-mod-devel", "red_hat_enterprise_linux_10:nginx-mod-http-image-filter", "red_hat_enterprise_linux_10:nginx-mod-http-perl", "red_hat_enterprise_linux_10:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_10:nginx-mod-mail", "red_hat_enterprise_linux_10:nginx-mod-stream", "red_hat_enterprise_linux_10:nginx.src", "red_hat_enterprise_linux_8:nginx", "red_hat_enterprise_linux_8:nginx-all-modules", "red_hat_enterprise_linux_8:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_8:nginx-filesystem", "red_hat_enterprise_linux_8:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-devel", "red_hat_enterprise_linux_8:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-perl", "red_hat_enterprise_linux_8:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-mail", "red_hat_enterprise_linux_8:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-stream", "red_hat_enterprise_linux_8:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_8:nginx.src", "red_hat_enterprise_linux_8:nginx.src::nginx:1.24", "red_hat_enterprise_linux_8:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx", "red_hat_enterprise_linux_9:nginx-all-modules", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.26", "red_hat_enterprise_linux_9:nginx-core", "red_hat_enterprise_linux_9:nginx-core::nginx:1.24", "red_hat_enterprise_linux_9:nginx-core::nginx:1.26", "red_hat_enterprise_linux_9:nginx-filesystem", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-devel", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-perl", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-mail", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-stream", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.26", "red_hat_enterprise_linux_9:nginx.src", "red_hat_enterprise_linux_9:nginx.src::nginx:1.24", "red_hat_enterprise_linux_9:nginx.src::nginx:1.26", "red_hat_enterprise_linux_9:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx::nginx:1.26", "red_hat_lightspeed_proxy_1:insights-proxy/insights-proxy-container-rhel9" ] } ], "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2489872" } ], "notes": [ { "category": "description", "text": "A flaw was found in the ngx_http_v3_module module of NGINX. When NGINX is configured to use the HTTP/3 QUIC module, an attacker can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream and cause a use-after-free issue, potentially allowing code execution or a denial of service by forcing the process to restart.", "title": "Vulnerability description" }, { "category": "summary", "text": "nginx: ngx_http_v3_module: use-after-free issue leads to denial of service", "title": "Vulnerability summary" }, { "category": "other", "text": "This vulnerability is only exploitable when NGINX is configured to use the HTTP/3 QUIC module. This issue allows a remote unauthenticated attacker to potentially execute arbitrary code or cause a denial of service by forcing the worker process to restart.\n\nDefault Red Hat Enterprise Linux security features, including SELinux enforcement, Address Space Layout Randomization (ASLR) and NX (No-Execute) stack protection, significantly increase the difficulty of achieving arbitrary code execution, limiting the impact of this vulnerability.\n\nDue to these reasons, this vulnerability has been rated with an important severity.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Red Hat Hardened Images:nginx-main@aarch64", "Red Hat Hardened Images:nginx-main@noarch", "Red Hat Hardened Images:nginx-main@src", "Red Hat Hardened Images:nginx-main@x86_64" ], "known_not_affected": [ "red_hat_enterprise_linux_10:nginx", "red_hat_enterprise_linux_10:nginx-all-modules", "red_hat_enterprise_linux_10:nginx-core", "red_hat_enterprise_linux_10:nginx-filesystem", "red_hat_enterprise_linux_10:nginx-mod-devel", "red_hat_enterprise_linux_10:nginx-mod-http-image-filter", "red_hat_enterprise_linux_10:nginx-mod-http-perl", "red_hat_enterprise_linux_10:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_10:nginx-mod-mail", "red_hat_enterprise_linux_10:nginx-mod-stream", "red_hat_enterprise_linux_10:nginx.src", "red_hat_enterprise_linux_8:nginx", "red_hat_enterprise_linux_8:nginx-all-modules", "red_hat_enterprise_linux_8:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_8:nginx-filesystem", "red_hat_enterprise_linux_8:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-devel", "red_hat_enterprise_linux_8:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-perl", "red_hat_enterprise_linux_8:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-mail", "red_hat_enterprise_linux_8:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-stream", "red_hat_enterprise_linux_8:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_8:nginx.src", "red_hat_enterprise_linux_8:nginx.src::nginx:1.24", "red_hat_enterprise_linux_8:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx", "red_hat_enterprise_linux_9:nginx-all-modules", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.26", "red_hat_enterprise_linux_9:nginx-core", "red_hat_enterprise_linux_9:nginx-core::nginx:1.24", "red_hat_enterprise_linux_9:nginx-core::nginx:1.26", "red_hat_enterprise_linux_9:nginx-filesystem", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-devel", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-perl", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-mail", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-stream", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.26", "red_hat_enterprise_linux_9:nginx.src", "red_hat_enterprise_linux_9:nginx.src::nginx:1.24", "red_hat_enterprise_linux_9:nginx.src::nginx:1.26", "red_hat_enterprise_linux_9:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx::nginx:1.26", "red_hat_lightspeed_proxy_1:insights-proxy/insights-proxy-container-rhel9" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-42530" }, { "category": "external", "summary": "RHBZ#2489872", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2489872" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-42530", "url": "https://www.cve.org/CVERecord?id=CVE-2026-42530" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42530", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42530" }, { "category": "external", "summary": "https://my.f5.com/manage/s/article/K000161616", "url": "https://my.f5.com/manage/s/article/K000161616" } ], "release_date": "2026-06-17T14:04:32.173000+00:00", "remediations": [ { "category": "vendor_fix", "date": "2026-05-23T05:23:30+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/", "product_ids": [ "Red Hat Hardened Images:nginx-main@aarch64", "Red Hat Hardened Images:nginx-main@noarch", "Red Hat Hardened Images:nginx-main@src", "Red Hat Hardened Images:nginx-main@x86_64" ], "url": "https://access.redhat.com/errata/RHSA-2026:20351" }, { "category": "workaround", "details": "To mitigate this vulnerability, disable HTTP/3 by removing quic from all listen directives.", "product_ids": [ "Red Hat Hardened Images:nginx-main@aarch64", "Red Hat Hardened Images:nginx-main@noarch", "Red Hat Hardened Images:nginx-main@src", "Red Hat Hardened Images:nginx-main@x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "Red Hat Hardened Images:nginx-main@aarch64", "Red Hat Hardened Images:nginx-main@noarch", "Red Hat Hardened Images:nginx-main@src", "Red Hat Hardened Images:nginx-main@x86_64", "red_hat_enterprise_linux_10:nginx", "red_hat_enterprise_linux_10:nginx-all-modules", "red_hat_enterprise_linux_10:nginx-core", "red_hat_enterprise_linux_10:nginx-filesystem", "red_hat_enterprise_linux_10:nginx-mod-devel", "red_hat_enterprise_linux_10:nginx-mod-http-image-filter", "red_hat_enterprise_linux_10:nginx-mod-http-perl", "red_hat_enterprise_linux_10:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_10:nginx-mod-mail", "red_hat_enterprise_linux_10:nginx-mod-stream", "red_hat_enterprise_linux_10:nginx.src", "red_hat_enterprise_linux_8:nginx", "red_hat_enterprise_linux_8:nginx-all-modules", "red_hat_enterprise_linux_8:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_8:nginx-filesystem", "red_hat_enterprise_linux_8:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-devel", "red_hat_enterprise_linux_8:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-perl", "red_hat_enterprise_linux_8:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-mail", "red_hat_enterprise_linux_8:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-stream", "red_hat_enterprise_linux_8:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_8:nginx.src", "red_hat_enterprise_linux_8:nginx.src::nginx:1.24", "red_hat_enterprise_linux_8:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx", "red_hat_enterprise_linux_9:nginx-all-modules", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.26", "red_hat_enterprise_linux_9:nginx-core", "red_hat_enterprise_linux_9:nginx-core::nginx:1.24", "red_hat_enterprise_linux_9:nginx-core::nginx:1.26", "red_hat_enterprise_linux_9:nginx-filesystem", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-devel", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-perl", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-mail", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-stream", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.26", "red_hat_enterprise_linux_9:nginx.src", "red_hat_enterprise_linux_9:nginx.src::nginx:1.24", "red_hat_enterprise_linux_9:nginx.src::nginx:1.26", "red_hat_enterprise_linux_9:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx::nginx:1.26", "red_hat_lightspeed_proxy_1:insights-proxy/insights-proxy-container-rhel9" ] } ], "threats": [ { "category": "impact", "details": "Important", "product_ids": [ "Red Hat Hardened Images:nginx-main@aarch64", "Red Hat Hardened Images:nginx-main@noarch", "Red Hat Hardened Images:nginx-main@src", "Red Hat Hardened Images:nginx-main@x86_64", "red_hat_enterprise_linux_10:nginx", "red_hat_enterprise_linux_10:nginx-all-modules", "red_hat_enterprise_linux_10:nginx-core", "red_hat_enterprise_linux_10:nginx-filesystem", "red_hat_enterprise_linux_10:nginx-mod-devel", "red_hat_enterprise_linux_10:nginx-mod-http-image-filter", "red_hat_enterprise_linux_10:nginx-mod-http-perl", "red_hat_enterprise_linux_10:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_10:nginx-mod-mail", "red_hat_enterprise_linux_10:nginx-mod-stream", "red_hat_enterprise_linux_10:nginx.src", "red_hat_enterprise_linux_8:nginx", "red_hat_enterprise_linux_8:nginx-all-modules", "red_hat_enterprise_linux_8:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_8:nginx-filesystem", "red_hat_enterprise_linux_8:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-devel", "red_hat_enterprise_linux_8:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter", "red_hat_enterprise_linux_8:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-perl", "red_hat_enterprise_linux_8:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_8:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-mail", "red_hat_enterprise_linux_8:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_8:nginx-mod-stream", "red_hat_enterprise_linux_8:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_8:nginx.src", "red_hat_enterprise_linux_8:nginx.src::nginx:1.24", "red_hat_enterprise_linux_8:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx", "red_hat_enterprise_linux_9:nginx-all-modules", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.24", "red_hat_enterprise_linux_9:nginx-all-modules::nginx:1.26", "red_hat_enterprise_linux_9:nginx-core", "red_hat_enterprise_linux_9:nginx-core::nginx:1.24", "red_hat_enterprise_linux_9:nginx-core::nginx:1.26", "red_hat_enterprise_linux_9:nginx-filesystem", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.24", "red_hat_enterprise_linux_9:nginx-filesystem::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-devel", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-devel::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-image-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-perl", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-perl::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-http-xslt-filter::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-mail", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-mail::nginx:1.26", "red_hat_enterprise_linux_9:nginx-mod-stream", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.24", "red_hat_enterprise_linux_9:nginx-mod-stream::nginx:1.26", "red_hat_enterprise_linux_9:nginx.src", "red_hat_enterprise_linux_9:nginx.src::nginx:1.24", "red_hat_enterprise_linux_9:nginx.src::nginx:1.26", "red_hat_enterprise_linux_9:nginx::nginx:1.24", "red_hat_enterprise_linux_9:nginx::nginx:1.26", "red_hat_lightspeed_proxy_1:insights-proxy/insights-proxy-container-rhel9" ] } ], "title": "nginx: ngx_http_v3_module: use-after-free issue leads to denial of service" } ] }