{
  "schema_version": "1.7.0",
  "id": "RHSA-2026:18028",
  "related": [],
  "upstream": [
    "CVE-2026-33416"
  ],
  "published": "2026-05-18T10:05:48Z",
  "modified": "2026-05-19T10:06:20Z",
  "summary": "Red Hat Security Advisory: libpng security update",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "name": "libpng",
        "ecosystem": "Red Hat:enterprise_linux:9::appstream",
        "purl": "pkg:rpm/redhat/libpng"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-debuginfo",
        "ecosystem": "Red Hat:enterprise_linux:9::appstream",
        "purl": "pkg:rpm/redhat/libpng-debuginfo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-debugsource",
        "ecosystem": "Red Hat:enterprise_linux:9::appstream",
        "purl": "pkg:rpm/redhat/libpng-debugsource"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-devel",
        "ecosystem": "Red Hat:enterprise_linux:9::appstream",
        "purl": "pkg:rpm/redhat/libpng-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-devel-debuginfo",
        "ecosystem": "Red Hat:enterprise_linux:9::appstream",
        "purl": "pkg:rpm/redhat/libpng-devel-debuginfo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-tools-debuginfo",
        "ecosystem": "Red Hat:enterprise_linux:9::appstream",
        "purl": "pkg:rpm/redhat/libpng-tools-debuginfo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng",
        "ecosystem": "Red Hat:enterprise_linux:9::baseos",
        "purl": "pkg:rpm/redhat/libpng"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-debuginfo",
        "ecosystem": "Red Hat:enterprise_linux:9::baseos",
        "purl": "pkg:rpm/redhat/libpng-debuginfo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-debugsource",
        "ecosystem": "Red Hat:enterprise_linux:9::baseos",
        "purl": "pkg:rpm/redhat/libpng-debugsource"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-devel",
        "ecosystem": "Red Hat:enterprise_linux:9::baseos",
        "purl": "pkg:rpm/redhat/libpng-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-devel-debuginfo",
        "ecosystem": "Red Hat:enterprise_linux:9::baseos",
        "purl": "pkg:rpm/redhat/libpng-devel-debuginfo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "name": "libpng-tools-debuginfo",
        "ecosystem": "Red Hat:enterprise_linux:9::baseos",
        "purl": "pkg:rpm/redhat/libpng-tools-debuginfo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.6.37-12.el9_7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:18028"
    },
    {
      "type": "ARTICLE",
      "url": "https://access.redhat.com/security/updates/classification/#moderate"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451805"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_18028.json"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-33416"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33416"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33416"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pnggroup/libpng/commit/23019269764e35ed8458e517f1897bd3c54820eb"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pnggroup/libpng/commit/7ea9eea884a2328cc7fdcb3c0c00246a50d90667"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pnggroup/libpng/commit/a3a21443ed12bfa1ef46fa0d4fb2b74a0fa34a25"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pnggroup/libpng/commit/c1b0318b393c90679e6fa5bc1d329fd5d5012ec1"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pnggroup/libpng/pull/824"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-m4pc-p4q3-4c7j"
    }
  ]
}