CVE-2026-104451: YesWiki before 4.6.7 CSRF Page Revision Restore via RevisionsHandler

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-02 · updated 2026-10-02
Weakness: CWE-352

Description

YesWiki before 4.6.7 contains a cross-site request forgery vulnerability in RevisionsHandler that allows attackers to restore old page revisions through GET requests lacking CSRF token validation. Attackers can lure write-capable users into a top-level navigation with the restoreRevisionId parameter, silently overwriting current page content with stale or vandalized revisions.

Affected products

yeswiki: before 4.6.7 — fixed in 4.6.7

How to fix

Upgrade to a fixed version: yeswiki 4.6.7. Check the vendor advisory for mitigations.

References

https://github.com/YesWiki/yeswiki/security/advisories/GHSA-vj5g-974q-7ff3
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-csrf-page-revision-restore-via-revisionshandler
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-vj5g-974q-7ff3

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