CVE-2026-73255 — Mongoose: Path traversal in SSI #include directives enables arbitrary file read
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 fil…
Published: 2026-08-20 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7