mongoose: Mongoose is an embedded web server and network library
CVE-2026-73257 is fixed in mongoose on 1 platform by DEBIAN-CVE-2026-73257 (version 7.22+ds-1), released August 21, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
Mongoose is an embedded web server and network library. Priro to version 7.22, a remote unauthenticated attacker can send an HTTP request containing both Content-Length and Transfer-Encoding: chunked. The cl_count and te_count checks in the mg_http_parse() and http_cb() paths in src/http.c accept both headers and prioritize chunked encoding, while a Content-Length-preferring reverse proxy can use a different request boundary. This CL.TE desynchronization can inject requests that access or modify resources in another user context. This issue is fixed in version 7.22.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| mongoose · Debian 14 | 7.22+ds-1 | DEBIAN-CVE-2026-73257 | Aug 21, 2026 |
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