Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck
CVE-2026-116203YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters
Medium 6.1
In plain English
A medium-severity cross-site scripting in yeswiki from YesWiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 93.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-f53x-3gqx-xq76) vendor-advisory
- VulnCheck Advisory: YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters third-party-advisory