Mongoose http_cb() Code Execution

The vulnerability of the httpcb function in the Mongoose library is related to deficiencies in handling HTTP requests when processing the Transfer-Encoding parameter: chunked. Exploiting this vulnerability can allow an attacker to gain unauthorized access to protected information or execute...

JLSEC-2026-1380

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 httpcb function in src/http.c tests hm.proto.len with an...

UBUNTU-CVE-2026-73256

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 httpcb function in src/http.c tests hm.proto.len with an...

UBUNTU-CVE-2026-73257

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 clcount and tecount checks in the mghttpparse and httpcb paths in src/http.c accept both...

CVE-2026-73256

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 httpcb function in src/http.c tests hm.proto.len with an...

CVE-2026-73257: Inconsistent Interpretation of HTTP Requests

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 clcount and tecount checks in the mghttpparse and httpcb paths in src/http.c accept both...

CVE-2026-73256: Inconsistent Interpretation of HTTP Requests

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 httpcb function in src/http.c tests hm.proto.len with an...

OSV-2023-980 UNKNOWN READ in skip_chunk

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63051 Crash type: UNKNOWN READ Crash state: skipchunk httpcb fuzz.c...

OSV-2023-867 Negative-size-param in http_cb

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62389 Crash type: Negative-size-param Crash state: httpcb fuzz.c...

mongoose:fuzz: Negative-size-param in http_cb

Project: https://github.com/cesanta/mongoose.git Detailed Report: https://oss-fuzz.com/testcase?key=6544071264698368 Project: mongoose Fuzzing Engine: libFuzzer Fuzz Target: fuzz Job Type: libfuzzerasanmongoose Platform Id: linux Crash Type: Negative-size-param Crash Address: Crash State: httpcb...