{"id":"JLSEC-2026-1379","details":"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.","modified":"2026-08-24T14:00:03.446825938Z","published":"2026-08-24T13:43:17.899Z","upstream":["CVE-2026-73255","EUVD-2026-63499"],"database_specific":{"license":"CC-BY-4.0","sources":[{"imported":"2026-08-23T06:21:13.228Z","modified":"2026-08-20T18:16:46.313Z","published":"2026-08-20T18:16:46.313Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-73255","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73255","database_specific":{"status":"Received"},"id":"CVE-2026-73255"},{"imported":"2026-08-23T06:20:06.545Z","modified":"2026-08-20T17:40:02Z","published":"2026-08-20T17:40:02Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-63499","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63499","affected":{"Cesanta:Mongoose":["\u003c 7.22"]},"id":"EUVD-2026-63499"}]},"references":[{"type":"WEB","url":"https://github.com/cesanta/mongoose/commit/a9df523f76f43a38bd53b4232b9cfd4c16869e71"},{"type":"WEB","url":"https://github.com/cesanta/mongoose/pull/3611"},{"type":"WEB","url":"https://github.com/cesanta/mongoose/releases/tag/7.22"},{"type":"WEB","url":"https://github.com/cesanta/mongoose/security/advisories/GHSA-h7m9-764r-7x4x"}],"affected":[{"package":{"name":"Mongoose_jll","ecosystem":"Julia","purl":"pkg:julia/Mongoose_jll?uuid=0a8a3f5b-4c0e-5906-8e29-5b3fee15539c"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1379.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"CNA"}]}