CVE catalog

CVE-2026-47251

libheif is a HEIF and AVIF file format decoder and…

libheif is a HEIF and AVIF file format decoder and encoder. The fix for CVE-2026-3949 (commit `b97c8b5`, PR #1712) introduced an integer overflow in the very security check it added. The check itself can be bypassed, allowing a crafted HEIF file with a VVC track to trigger the same out-of-bounds heap read that CVE-2026-3949 was meant to prevent. This is a separate, currently-unpatched vulnerability. Issue #1712 was closed as fixed without testing the edge case where `size` is near `UINT32_MAX`. Version 1.22.0 patches the issue.

Severity: Medium · CVSS 6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: May 28, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.16% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "libheif",
      "status": "not affected",
      "release": "sid",
      "version": "1.23.6-2"
    },
    {
      "name": "libheif",
      "status": "not affected",
      "release": "forky",
      "version": "1.23.6-2"
    },
    {
      "name": "libheif",
      "status": "not affected",
      "release": "trixie",
      "version": "1.19.8-1+deb13u1"
    },
    {
      "name": "libheif",
      "status": "not affected",
      "release": "trixie-security",
      "version": "1.23.6-2~deb13u1"
    },
    {
      "name": "libheif",
      "status": "not affected",
      "release": "bookworm",
      "version": "1.15.1-1+deb12u1"
    },
    {
      "name": "libheif",
      "status": "not affected",
      "release": "bookworm-security",
      "version": "1.15.1-1+deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "libheif",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "libheif",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "libheif",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "libheif",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "0"
    }
  ],
  "distribution_packages": [
    {
      "name": "libheif",
      "distro": "fedora",
      "release": "43",
      "versions": [
        "0:1.23.5-3.fc43"
      ],
      "ecosystem": "rpm",
      "vendor_status": "fixed",
      "provider_record_id": "FEDORA-2026-022FF83E3E#CVE-2026-47251"
    },
    {
      "name": "libheif",
      "ranges": [
        {
          "fixed": "1.22.0",
          "introduced": "",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "1.22.0",
      "provider_record_id": "NVD-CVE-2026-47251"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[heif-gdk-pixbuf]Unknown
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[heif-thumbnailer]Unknown
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif1]Unknown
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif-dev]Unknown
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif-examples]Unknown
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-aomdec]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-aomenc]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-dav1d]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-ffmpegdec]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-j2kdec]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-j2kenc]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-jpegdec]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-jpegenc]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-libde265]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-rav1e]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugins-all]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-svtenc]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-x265]Unknown
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm

[Fedora 43]

[libheif]Unknown
Source package: [libheif]
Details (3)
- 1.20.2-6.fc43 · aarch64 · 43
  Unknown
  Version impact unknown
  nvd · libheif · fedora · 43
- 1.20.2-6.fc43 · i686 · 43
  Unknown
  Version impact unknown
  nvd · libheif · fedora · 43
- 1.20.2-6.fc43 · x86_64 · 43
  Unknown
  Version impact unknown
  nvd · libheif · fedora · 43
[libheif-devel]Unknown
Source package: [libheif]
Details (3)
- 1.20.2-6.fc43 · aarch64 · 43
  Unknown
  Version impact unknown
  nvd · libheif · fedora · 43
- 1.20.2-6.fc43 · i686 · 43
  Unknown
  Version impact unknown
  nvd · libheif · fedora · 43
- 1.20.2-6.fc43 · x86_64 · 43
  Unknown
  Version impact unknown
  nvd · libheif · fedora · 43

Next results

Observed: Oct 27, 2026, 7:19:03 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [Fedora security updates (Bodhi)] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]