CVE-2025-46346: YesWiki Vulnerable to Stored XSS in Comments
Description
YesWiki is a wiki system written in PHP. Prior to version 4.5.4, a stored cross-site scripting (XSS) vulnerability was discovered in the application’s comments feature. This issue allows a malicious actor to inject JavaScript payloads that are stored and later executed in the browser of any user viewing the affected comment. The XSS occurs because the application fails to properly sanitize or encode user input submitted to the comments. Notably, the application sanitizes or does not allow execution of `` tags, but does not account for payloads obfuscated using JavaScript block comments like `/* JavaScriptPayload */`. This issue has been patched in version 4.5.4.
Classification
CVE ID: CVE-2025-46346
CVSS Base Severity: MEDIUM
CVSS Base Score: 5.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Problem Types
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: YesWiki
Product: yeswiki
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 10.23% (scored less or equal to compared to others)
EPSS Date: 2025-05-28 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-46346https://github.com/YesWiki/yeswiki/security/advisories/GHSA-59x8-cvxh-3mm4
https://github.com/YesWiki/yeswiki/commit/0d4efc880a727599fa4f6d7a64cc967afe475530