p PatchFirst

CVE-2026-73255

CVE-2026-73255 · Mongoose: Path traversal in SSI #include directives enables arbitrary file read

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.5 · Medium · EPSS 0.7% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • mongoose

    Versions
    • < 7.22: Affected

    No fix published

  • mongoose Debian:14

    Versions
    • 7.21+ds-1
    • 7.21+ds-1~bpo13+1
    • 7.21+ds-2
    • 7.22+ds-1~bpo13+1
    Affected ranges
    • ECOSYSTEM: < 7.22+ds-1

    Update to 7.22+ds-1

  • mongoose Ubuntu:26.10

    Versions
    • 7.21+ds-1
    • 7.21+ds-2
    • 7.22+ds-1
    • 7.23+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →