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CVE-2026-73255

6.5 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

Mongoose is an embedded web server and network library. Prior to 7.22, an attacker who can control an SSI-enabled file can place directory traversal sequences in an #include file or #include virtual directive. The mg_ssi() function in src/ssi.c concatenates the directive argument into a filesystem path without calling mg_path_is_sane(), allowing an MG_ENABLE_SSI deployment with ssi_pattern configured to disclose files readable by the Mongoose process. This issue is fixed in version 7.22.

Fix

Patch, vendor advisory and mitigation references on NVD 3

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.5 · cesantaNVD modified 2026-10-18 20:10

Affected (CPE criteria) 1

  • cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:*

References 4