CVE-2026-82522 (GCVE-0-2026-82522)

Vulnerability from cvelistv5 – Published: 2026-09-02 17:37 – Updated: 2026-10-01 15:21 X_Open Source
VLAI
Title
libjxl < 0.12.0 Container Box Parser Integer Underflow via 32-bit Size Truncation
Summary
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.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 18:01 UTC
CWE
  • CWE-681 - Incorrect Conversion between Numeric Types
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
libjxl libjxl Affected: 0 , < 0.12.0 (semver)
    cpe:2.3:a:libjxl_project:libjxl:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-01 00:00
Credits
Ali Raza (@locus-x64)
Show details on NVD website
To clipboard 

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