MEDIUMVulnerability
CVE-2026-73259
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.
Properties
- severity
- MEDIUM
- score
- 5.4
- epss_score
- 0.00278
- cve_id
- CVE-2026-73259
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- published_at
- 2026-08-20T18:16:47.730
- last_modified
- 2026-09-09T21:19:49.197
- epss_percentile
- 0.20132
Related Entities (3)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
DESCRIBED_BY (1)
→[Source]NVD
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