CVE-2026-5318CWE-119CWE-787

LibRaw JPEG DHT losslessjpeg.cpp initval out-of-bounds write

Medium · published April 2, 2026

CVSS v4.0
5.3
EPSS
1%
Percentile
55.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00784 · 55.6th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-787 · Out-of-bounds Write
Published
2026-04-02T01:45Z
EPSS history
Timeline
  • 02 APR 01:45Z
    LibRaw JPEG DHT losslessjpeg.cpp initval out-of-bounds write
    cvelistv5