Buffer overflow in Libraw
CVE-2026-5318
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.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (46.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
Affected products
- Libraw
- N/a Libraw — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (issue-tracking, Issue Tracking)
- cna@vuldb.com (issue-tracking, Issue Tracking)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (Patch, patch)
- cna@vuldb.com (Product, Release Notes, patch)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2026-5318?
- CVE-2026-5318 is a medium-severity vulnerability in Libraw, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.3/10. Published 2026-04-02.
- How severe is CVE-2026-5318?
- Medium severity. CVSS v3 base score is 4.3 out of 10.