5.4

CVE-2026-73259

Exploit

Mongoose: Reflected XSS via decoded URI in directory listing render

Mongoose is an embedded web server and network library. Prior to 7.22, a remote attacker can send a crafted percent-encoded request path to a deployment using MG_ENABLE_DIRLIST and persuade a user to visit it. The mg_http_serve_dir() and listdir() path in src/http.c places the decoded request URI into the title and h1 elements without HTML entity encoding. The resulting reflected cross-site scripting executes in the Mongoose origin and can expose session data or perform actions as the victim. This issue is fixed in version 7.22.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cesanta ≫ Mongoose Version < 7.22
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 5.4 2.8 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://github.com/cesanta/mongoose/releases/tag/7.22
Release Notes
https://github.com/cesanta/mongoose/pull/3611
Patch
Issue Tracking
https://github.com/cesanta/mongoose/commit/a9df523f76f43a38bd53b4232b9cfd4c16869e71
Patch
https://github.com/cesanta/mongoose/security/advisories/GHSA-9cwm-487w-h25w
Vendor Advisory
Exploit