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Fencer Intel
medium 5.5

CVE-2026-4367 json

Libxpm: libxpm: denial of service via out-of-bounds read in xpm file parsing

published 4mo ago modified 4d ago also EUVD-2026-37136

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.

Patch / fix

  • Red Hat Red Hat Hardened Images 3.5.17-7.2.hum1, 3.5.19-4.hum1
  • libxpm Debian 13 1:3.5.17-1+deb13u1
  • libxpm Debian 14 1:3.5.19-1

debian advisories DEBIAN-CVE-2026-4367

  • libxpm Ubuntu 22.04 LTS 1:3.5.12-1ubuntu0.22.04.3
  • libxpm Ubuntu 24.04 LTS 1:3.5.17-1ubuntu0.24.04.1
  • libxpm Ubuntu 26.04 LTS 1:3.5.17-1ubuntu0.26.04.1

ubuntu advisories UBUNTU-CVE-2026-4367

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libXpm hummingbird 1 3.5.19-4.hum1
  • libXpm hummingbird 1 3.5.17-7.2.hum1

red hat advisories RHSA-2026:47072RHSA-2026:30354

  • libXpm SLES for SAP applications 16.0, SLES 16.0 3.5.17-160000.3.1

suse advisories SUSE-SU-2026:22121-1

  • libXpm openSUSE Leap 16.0 3.5.17-160000.3.1
  • libXpm openSUSE Tumbleweed 3.5.18-2.1

opensuse advisories openSUSE-SU-2026:20953-1openSUSE-SU-2026:10608-1

  • libxpm Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 3.5.19-r0

alpine advisories ALPINE-CVE-2026-4367

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libXpm Azure Linux 3.0 3.5.19-1

azure linux advisories AZL-90198

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2026-4367 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-4367 updated cvss 5.5

libXpm: libXpm: Denial of Service via out-of-bounds read in XPM file parsing

  • Red Hat Enterprise Linux 6 libXpm Red Hat Enterprise Linux 7 libXpm Red Hat Enterprise Linux 8 libXpm Red Hat Enterprise Linux 9 libXpm Red Hat Enterprise Linux 10 libXpm
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images libXpm 3.5.19-4.hum1, libXpm 3.5.17-7.2.hum1
    fixed: vendor fix RHSA-2026:30354

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.