DEBIAN-CVE-2026-73256
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-73256
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73256.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-73256
- Upstream
- Published
- 2026-08-20T18:16:46Z
- Modified
- 2026-09-10T08:47:32Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Mongoose is an embedded web server and network library. Prior to 7.22, a remote unauthenticated attacker can exploit an HTTP/1.0 reverse-proxy deployment by sending a request with Transfer-Encoding: chunked and conflicting framing. The http_cb() function in src/http.c tests hm.proto.len with an impossible greater-than-eight condition even though mg_http_parse() requires an eight-byte protocol string, so is_http_1_0 is never set. Mongoose consequently processes chunked encoding that an HTTP/1.0 proxy can ignore, enabling request smuggling and unauthorized access or state changes. This issue is fixed in version 7.22.
- References
Affected packages
Debian:14 / mongoose
Package
- Name
- mongoose
- Purl
- pkg:deb/debian/mongoose?arch=source&distro=forky