Advisory severityMedium5.0Red Hat Linux

Medium [CVE-2026-52584] Information disclosure via Buffer Overflow in DecodeImageAPNG function

This medium-severity Red Hat Linux advisory covers CVE-2026-52584 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-52584 Source published Jul 17, 2026Source updated Jul 17, 2026

VulniPulse record published Jul 23, 2026Record updated Jul 31, 2026

CVE-2026-52584

Affected products & platforms

Red Hat LinuxRed Hat Enterprise Linux

Open source advisory

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Summary

Buffer Overflow vulnerability in libjxl v.0.11.2 and before allows a local attacker to obtain sensitive information via the DecodeImageAPNG function A flaw was found in libjxl. The flaw occurs within the `DecodeImageAPNG` function, which can lead to unauthorized disclosure of data.

Red Hat ships libjxl as a bundled component within Firefox and Thunderbird. The vulnerable code path is in the APNG decoder (DecodeImageAPNG), which is part of the extras module used by command-line tools.

Red Hat severity: Moderate — CVSS 5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N). Weakness: CWE-120.

Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.

Affected products named by the advisory: Red Hat package: firefox; Red Hat package: thunderbird.

Affected versions

< 0.11.2

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Discussion(0)

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