{"apiVersion":"1.0","identifier":"CVE-2026-52834","description":"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 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.","publishedAt":"2026-08-19T15:17:09","lastModifiedAt":"2026-08-19T19:17:18","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52834","cvssScore":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H","epssProbability":0.0013,"riskScore":0.74,"affectedProduct":"jxl-oxide","affectedVersions":"<0.6.2","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-52834","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-52834","en":"https://www.redsauce.net/en/cves/CVE-2026-52834","fr":"https://www.redsauce.net/fr/cves/CVE-2026-52834","pt":"https://www.redsauce.net/pt/cves/CVE-2026-52834","de":"https://www.redsauce.net/de/cves/CVE-2026-52834","sk":"https://www.redsauce.net/sk/cves/CVE-2026-52834","el":"https://www.redsauce.net/el/cves/CVE-2026-52834"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-52834"}}