What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-02 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• LibRaw: before 0.22.1 — fixed in 0.22.1

How to fix

Upgrade to a fixed version: LibRaw 0.22.1. Check the vendor advisory for mitigations.

References

• https://github.com/LibRaw/LibRaw/
• https://github.com/LibRaw/LibRaw/commit/a6734e867b19d75367c05f872ac26322464e3995
• https://github.com/LibRaw/LibRaw/issues/794
• https://github.com/LibRaw/LibRaw/issues/794#issuecomment-4065342499
• https://github.com/LibRaw/LibRaw/releases/tag/0.22.1
• https://github.com/biniamf/pocs/tree/main/libraw_lljpeg
• https://vuldb.com/submit/780538
• https://vuldb.com/vuln/354650
• https://vuldb.com/vuln/354650/cti

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