CVEvulnerability

CVE-2026-47247

7.5 HIGH Published 2026-07-21 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-07-21
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-200, CWE-226, CWE-682, CWE-908

Description

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, two bugs in libheif chain to leak process heap memory as visible pixel values in decoded grid images. An attacker who uploads a crafted AVIF/HEIC file to any server-side image processor (WordPress, Sharp/libvips, ImageMagick, etc.) can recover heap data - including library function pointers sufficient to defeat ASLR, or any other secret - from the publicly-downloadable transcoded JPEG/PNG/WebP output. Local attack vectors are also possible. Version 1.22.0 fixes the issue.

Affected configurations

• struktur libheif (< 1.22.0)

Related

Weakness · CWE (4)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-226 Sensitive Information in Resource Not Removed Before Reuse weakness
  • CWE-682 Incorrect Calculation weakness
  • CWE-908 Use of Uninitialized Resource weakness

References