Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck
CVE-2026-116206YesWiki 4.2.0 before 4.7.0 Stored XSS via Comment Raw-HTML Syntax
Medium 6.4
In plain English
A medium-severity cross-site scripting in yeswiki from YesWiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.1)6.4Medium
Exploit odds (30 days)0.2%top 95.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
YesWiki from 4.2.0 before 4.7.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject script into comment bodies using the wakka raw-HTML syntax. Attackers can post comments via the /api/comments endpoint that render unescaped through the Twig raw filter, executing JavaScript in administrators' and visitors' sessions.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-wq96-vjjh-hfc6) vendor-advisory
- VulnCheck Advisory: YesWiki 4.2.0 before 4.7.0 Stored XSS via Comment Raw-HTML Syntax third-party-advisory