X.org libXpm up to 3.5.4 xpmNextWord out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k4.77-

Summaryinfo

A vulnerability labeled as problematic has been found in X.org libXpm up to 3.5.4. The impacted element is the function xpmNextWord. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2026-4367. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in X.org libXpm up to 3.5.4. It has been classified as problematic. Affected is the function xpmNextWord. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality.

The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2026-4367. There are known technical details, but no exploit is available.

Upgrading to version 3.5.19 eliminates this vulnerability. Applying the patch 5448e1bd is able to eliminate this problem. The bugfix is ready for download at gitlab.freedesktop.org. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: libXpm 3.5.19
Patch: 5448e1bd

Timelineinfo

04/23/2026 Advisory disclosed
04/23/2026 +0 days VulDB entry created
04/23/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Advisory: seclists.org
Status: Confirmed

CVE: CVE-2026-4367 (🔒)
GCVE (CVE): GCVE-0-2026-4367
GCVE (VulDB): GCVE-100-359124

Entryinfo

Created: 04/23/2026 08:55
Changes: 04/23/2026 08:55 (54)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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