CVE-2026-82522

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 61/100
Published: 2026-09-02 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: None
VC: Low
VI: Low
VA: None

Description

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.

Affected Software (1)

VendorProductVersion
libjxl libjxl 0 < 0.12.0

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

5.3 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.23%
Raw Score 0.002300
Percentile 14.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00230
2026-11-12
0.00230
2026-11-10
0.00407
2026-11-09
0.00407
2026-11-08
0.00407

Intelligence Sources

mitre ref →