CVE-2026-103441Unauthenticated arbitrary file deletion through Wikibase serialized entity parsing
Updated under an hour ago ()
Does this affect you?
It affects The Wikimedia Foundation MediaWiki Wikibase extension. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.28%, higher than 19% of scored CVEs.
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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.
- CVSS
- 7.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:I/V:C/RE:M/U:Red
- Weakness (CWE)
- CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.28% (percentile 19)
- Assigned by
- wikimedia-foundation
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
The Wikimedia Foundation MediaWiki Wikibase extension wikimedia_foundation:mediawiki_wikibase_extension (from the name) | 1.46; 1.45; 1.43 | CNA record |
References
- https://phabricator.wikimedia.org/T435210
- https://gerrit.wikimedia.org/r/q/Id35bf747e48370e474d9b9444bd7520b24836e8d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.