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CVE-2026-5318— LibRaw JPEG DHT losslessjpeg.cpp initval out-of-bounds write

Quick assessment

Affected
n/a LibRaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Libraw是Libraw公司的一个用来处理RAW(CRW/CR2,NEF,RAF,DNG,andothers)格式图片的C++库，支持各种操作系统。 LibRaw 0.22.0及之前版本存在缓冲区错误漏洞，该漏洞源于组件JPEG DHT Parser的文件src/decompressors/losslessjpeg.cpp中函数HuffTable::initval对参数bits[]的操作存在越界写入，可能导致远程攻击。

CVSS 4.3 · Medium EPSS 0.78% · P54

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5318

Vulnerability Information
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Vulnerability Title
LibRaw JPEG DHT losslessjpeg.cpp initval out-of-bounds write
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits[] causes out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 0.22.1 will fix this issue. Patch name: a6734e867b19d75367c05f872ac26322464e3995. It is advisable to upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Libraw 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Libraw是Libraw公司的一个用来处理RAW(CRW/CR2,NEF,RAF,DNG,andothers)格式图片的C++库，支持各种操作系统。 LibRaw 0.22.0及之前版本存在缓冲区错误漏洞，该漏洞源于组件JPEG DHT Parser的文件src/decompressors/losslessjpeg.cpp中函数HuffTable::initval对参数bits[]的操作存在越界写入，可能导致远程攻击。
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
- LibRaw 0.1 cpe:2.3:a:libraw:libraw:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5318

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III. Intelligence Information for CVE-2026-5318

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Patches & Fixes for CVE-2026-5318 (2)

Vendor Advisories for CVE-2026-5318 (3)

Proof of Concept for CVE-2026-5318 (1)

Other References for CVE-2026-5318 (1)

Same Patch Batch · n/a · 2026-04-02 · 13 CVEs total

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CVE-2026-34876 Mbed TLS 安全漏洞
CVE-2026-30603 Qianniao QN-L23PA0904 安全漏洞
CVE-2026-34877 Mbed TLS 安全漏洞
CVE-2026-30252 Interzen Consulting ZenShare Suite 安全漏洞
CVE-2026-30251 Interzen Consulting ZenShare Suite 安全漏洞

IV. Related Vulnerabilities

Same product: LibRaw
Same vendor: n/a
Same weakness: CWE-787

V. Comments for CVE-2026-5318

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