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CVE-2026-52834— jxl-oxide: Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms

Quick assessment

Affected
tirr-c jxl-oxide
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wonwoo Choi jxl-oxide是Wonwoo Choi个人开发者的一个JPEG XL图像解码组件。 Wonwoo Choi jxl-oxide 0.12.6之前版本存在安全漏洞，该漏洞源于32位平台上AlignedGrid::with_alloc_tracker及相关网格和子网格算术中的长度计算溢出，可能导致攻击者控制的越界写入，造成内存损坏、拒绝服务或任意代码执行。

CVSS 7.3 · High EPSS 0.17% · P7

Affected Version Matrix 2

VendorProduct Version RangeStatus
tirr-c jxl-grid < 0.6.2 affected
tirr-c jxl-oxide < 0.12.6 affected
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I. Basic Information for CVE-2026-52834

Vulnerability Information
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Vulnerability Title
jxl-oxide: Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Wonwoo Choi jxl-oxide 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wonwoo Choi jxl-oxide是Wonwoo Choi个人开发者的一个JPEG XL图像解码组件。 Wonwoo Choi jxl-oxide 0.12.6之前版本存在安全漏洞，该漏洞源于32位平台上AlignedGrid::with_alloc_tracker及相关网格和子网格算术中的长度计算溢出，可能导致攻击者控制的越界写入，造成内存损坏、拒绝服务或任意代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tirr-c jxl-oxide < 0.12.6 -
tirr-c jxl-grid < 0.6.2 -

II. Public POCs for CVE-2026-52834

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8267 chars
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III. Intelligence Information for CVE-2026-52834

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Patches & Fixes for CVE-2026-52834 (1)

Vendor Advisories for CVE-2026-52834 (2)

Vendor Pages for CVE-2026-52834 (1)

IV. Related Vulnerabilities

Same weakness: CWE-122