{"id":"CVE-2026-52834","title":"jxl-oxide is a pure Rust implementation of a JPEG XL decoder","summary":"jxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H","cwe":["CWE-122","CWE-131","CWE-190"],"vendor":"jxl-grid","product":"jxl-grid","affected":["jxl-grid <= 0.6.1"],"patched":["jxl-grid 0.6.2"],"published":"2026-08-19","updated":"2026-09-18","sourceUpdated":"2026-09-18T20:09:01.757","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52834","references":[{"url":"https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2","label":"security-advisories@github.com"},{"url":"https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6","label":"security-advisories@github.com"},{"url":"https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5","label":"security-advisories@github.com"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0151.html","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-5pmv-rx8r-wmv5"}],"tags":["nvd","ghsa","rust"],"epss":0.0013,"epssPercentile":0.03031,"ecosystem":"rust","ingestedAt":"2026-07-02T21:44:45.098Z","slug":"CVE-2026-52834","body":"## Overview\n\njxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid arithmetic. A 65536 x 65536 frame can pass the frame-area limit while overflowing the usize element count, causing modular, VarDCT, or filter rendering paths to allocate a backing buffer smaller than the logical grid. A tiny bitstream-controlled cropped frame combined with a huge canvas or requested region can also reach the vulnerable composition path in crates/jxl-render/src/blend.rs through ordinary render_frame(). Later mutable subgrid and raw-pointer operations can then perform attacker-controlled out-of-bounds writes, causing memory corruption, denial of service, or arbitrary code execution. This issue is fixed in jxl-grid version 0.6.2.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-52834)\n\nAffected packages:\n\n- `jxl-grid <= 0.6.1`\n\nPatched in:\n\n- `jxl-grid 0.6.2`\n\nSource: https://github.com/advisories/GHSA-5pmv-rx8r-wmv5","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}