CVE-2026-5318: A weakness has been identified in LibRaw up to 0.22.0

Q: How do I fix CVE-2026-5318?

libraw: upgrade to 0.22.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-5318 being exploited?

CVE-2026-5318 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5318 affect?

CVE-2026-5318 affects libraw. Severity is medium (CVSS 4.3). 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-boun

Q: How urgent is CVE-2026-5318?

Priority 33/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-5318 is a medium-severity flaw (CVSS 4.3) affecting libraw. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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: a6734e867b

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-119, CWE-787
Published	2026-04-02
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: libraw

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 03:16 UTCPublished CVE record published
2026-06-17 10:58 UTCUpdated Record last modified

libraw libraw UPGRADE

Affected: < 0.22.1

Fixed in: 0.22.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libraw || rpm -q libraw || libraw --version

2. UPGRADE to 0.22.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libraw

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libraw

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5318?

libraw: upgrade to 0.22.1. Exact commands for each OS are on this page.

Is CVE-2026-5318 being exploited?

CVE-2026-5318 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5318 affect?

CVE-2026-5318 affects libraw. Severity is medium (CVSS 4.3). 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-boun

How urgent is CVE-2026-5318?

Priority 33/100. Public exploit reference

Related CVEs

CVE-2026-21413 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit
CVE-2026-5342 MEDIUM 5.3 UPGRADE A flaw has been found in LibRaw up to 0.22.0
CVE-2026-24660 HIGH 8.1 DOWNGRADE A heap-based buffer overflow vulnerability exists in the x3f_load_huffman functionality of LibRaw Commit d2031
CVE-2026-20911 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the HuffTable::initval functionality of LibRaw Commit 0b5
CVE-2026-20889 CRITICAL 9.8 DOWNGRADE A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d2031

References

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