Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck
CVE-2026-116202YesWiki before 4.7.0 Stored XSS via ImageField SVG Upload
Medium 5.4
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 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.1%top 96.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
YesWiki before 4.7.0 contains a stored cross-site scripting vulnerability that allows low-privilege authenticated users to upload unsanitized SVG files through the bazar ImageField class. Attackers can submit a malicious SVG via the image field of the entries API, which is served as image/svg+xml and executes script for users viewing the entry or file.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-c5q6-7233-3v6g) vendor-advisory
- VulnCheck Advisory: YesWiki before 4.7.0 Stored XSS via ImageField SVG Upload third-party-advisory