All vulnerabilities
CVE-2026-103441

Unauthenticated arbitrary file deletion through Wikibase serialized entity parsing

The Wikimedia Foundation MediaWiki Wikibase extensionApplications & CMS
Open in ThreatlineRecord JSON
CVSS
7.2High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published30 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

Description

Deserialization of untrusted data vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension allows Leverage Executable Code in Non-Executable Files.

This issue affects MediaWiki Wikibase extension: 1.46, 1.45, and 1.43.

Text from CVE List

Affected versions 3

  • MediaWiki Wikibase extensionaffected: 1.46CVE List
  • MediaWiki Wikibase extensionaffected: 1.45CVE List
  • MediaWiki Wikibase extensionaffected: 1.43CVE List

References 2