What’s Vulnerable › Vulnerabilities

CVE-2026-100377: Revision-deleted pages can be viewed through WikiLambda's action=edit and Special:ViewAbstract

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-09-28
• Weakness: CWE-200

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Excavation. This issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.

Affected products

• Wikimedia Foundation Mediawiki - WikiLambda Extension: 1.47.0-alpha

References

• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1320186
• https://phabricator.wikimedia.org/T430601

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