Information Exposure Affecting libheif-devel package, versions <0:1.19.8-1.amzn2023.0.7


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-AMZN2023-LIBHEIFDEVEL-18063879
  • published21 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-47247  (opens in a new tab)
CWE-200  (opens in a new tab)
CWE-226  (opens in a new tab)
CWE-682  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libheif-devel to version 0:1.19.8-1.amzn2023.0.7 or higher.
This issue was patched in ALAS2023-2026-1971.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libheif-devel package and not the libheif-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1