CVE-2026-82522 - libjxl Container Box Parser Integer Underflow Metadata Injection Vulnerability

CVE-2026-82522 - libjxl Container Box Parser Integer Underflow Metadata Injection Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Wed, 09/02/2026 - 22:29
CVE ID :CVE-2026-82522
Published : Sept. 2, 2026, 6:21 p.m. | 42 minutes ago
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.
Severity: 5.4 | MEDIUM
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