High severity · published Oct 25, 2026
CVE-2026-116204
YesWiki before 4.7.0 CSRF via despam Admin Action
New
8.1
CVSS
0.1%
EPSS
No
On KEV
Description
YesWiki before 4.7.0 contains a cross-site request forgery vulnerability in the despam action (tools/security/actions/despam.php) that lets unauthenticated attackers delete or restore pages through an administrator's session. Attackers can plant an auto-submitting raw HTML form on a wiki page, so an administrator who views it posts clean, suppr[], or rev[] parameters that delete PagePrincipale, configuration pages, or overwrite current content.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YE
yeswiki · YesWiki
before 4.7.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116204
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116204
github.com
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-cv88-hx5q-vq72
www.vulncheck.com
https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-csrf-via-despam-admin-action
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