Medium severity · published Oct 25, 2026
CVE-2026-116203
YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters
New
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
YesWiki before 4.7.0 contains a stored cross-site scripting vulnerability in the filtertags action, which echoes attacker-controlled token values without output encoding. Anonymous attackers can inject markup via action-attribute parameters that bypasses the allow_raw_html gate, executing JavaScript for every page viewer.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% 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-2026-116203
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116203
github.com
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-f53x-3gqx-xq76
www.vulncheck.com
https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-stored-xss-via-filtertags-action-parameters
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