libjxl < 0.12.0 Container Box Parser Integer Underflow via 32-bit Size Truncation
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.
CVE-2026-82522
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82522
libjxl
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/libjxl/libjxl",
"vendor": "libjxl",
"product": "libjxl",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "0.12.0",
"versionType": "semver"
}
],
"packageURL": "pkg:github/libjxl/libjxl",
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-82522
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #5573 · Revision 1
- Added to Heist Feed
- Publisher date