Catalogue CVE

CVE-2026-73257

DEBIAN-

[Catalogue CVE]

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.

Gravité
Critical · CVSS 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.67% · Oct 27, 2026

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / releasePackageVersionStatusSource
Debian14mongoose7.21+ds-1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.21+ds-1~bpo13+1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.21+ds-2UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.22+ds-1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.22+ds-1~bpo13+1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Debian14mongoose7.21+ds-1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.21+ds-1~bpo13+1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.21+ds-2UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.22+ds-1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Debian14mongoose7.22+ds-1~bpo13+1UnknownSource applicability is not established[DEBIAN-CVE-2026-73257]
Original provider fields
{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "mongoose",
      "distro": "debian",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.22+ds-1"
            }
          ]
        }
      ],
      "release": "14",
      "versions": [
        "7.21+ds-1",
        "7.21+ds-1~bpo13+1",
        "7.21+ds-2",
        "7.22+ds-1~bpo13+1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-73257",
      "fixed_version": "7.22+ds-1",
      "provider_source": "pypi",
      "provider_record_id": "DEBIAN-CVE-2026-73257",
      "provider_updated_at": "2026-10-23T17:47:24.713717101Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

L’association des paquets est en cours.

Observé:

Références

[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]