5.4
Medium
CVE-2026-73259 Mongoose is an embedded web server and network library
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Mongoose 7.22 | earliest → < 7.22 | 7.22 |
Other CVEs of Mongoose
The 38 CVEs of Mongoose →
CVE-2026-115473
Mongoose: Heap OOB reads and null-byte bypass in mg_path_is_sane (util.c)
6.5
Medium
CVE-2026-63626
Mongoose is an embedded web server and network library
8.8
High
CVE-2026-73261
Mongoose is an embedded web server and network library
7.5
High
CVE-2026-73260
Mongoose is an embedded web server and network library
7.5
High