Deserialization in The Wikimedia Foundation MediaWiki Wikibase Extension
CVE-2026-103441
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- The Wikimedia Foundation MediaWiki Wikibase Extension — versions 1.43, 1.45, 1.46
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2026-103441?
- CVE-2026-103441 is a vulnerability in The Wikimedia Foundation MediaWiki Wikibase Extension, classified under Deserialization of Untrusted Data. Published 2026-09-30.
- Is CVE-2026-103441 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.