Incorrect Conversion between Numeric Types Affecting jpeg-xl package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.41% (33rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-JPEGXL-19501628
  • published3 Sept 2026
  • disclosed2 Sept 2026

Introduced: 2 Sep 2026

CVE-2026-82522  (opens in a new tab)
CWE-681  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable jpeg-xl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jpeg-xl package and not the jpeg-xl package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

libjxl before 0.12 contains an integer underflow vulnerability in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL file causing the decoder to parse attacker-controlled codestream bytes as phantom box headers, enabling injection of arbitrary metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.

CVSS Base Scores

version 3.1