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CVE-2026-73254

Mongoose: Stored XSS via unescaped filenames in directory listing PUBLISHED

Description (CNA)

Mongoose is an embedded web server and network library. Prior to 7.22, an attacker who can create a file with an HTML payload in its name can trigger stored cross-site scripting when a user browses a directory served with MG_ENABLE_DIRLIST. The printdirentry() path called by listdir() in src/http.c URL-encodes the href but inserts the raw filesystem filename into the HTML link text. The browser executes the injected markup in the Mongoose origin, which can expose session data or permit actions as the victim. This issue is fixed in version 7.22.

Affected (CNA)

Vendor / productVersions
cesanta / mongooseaffected < 7.22

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.