DEBIAN-CVE-2026-73252
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-73252
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73252.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-73252
- Upstream
- Published
- 2026-10-14T19:17:19Z
- Modified
- 2026-10-15T05:01:32Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Mongoose is an embedded web server and network library. Prior to 7.23, the built-in TLS stack selected by MG_TLS_BUILTIN in src/tls_builtin.c accepts a TLS 1.3 record whose decrypted size is exactly the 16-byte authentication tag with no plaintext or ContentType byte. In mg_tls_recv_record(), the msgsz length check permits that record and the recv_len calculation underflows to SIZE_MAX, so a later handshake step treats stale buffer contents as a trusted message with an effectively unbounded length. An unauthenticated malicious TLS peer can trigger a heap out-of-bounds read before certificate or Finished validation, causing a remote denial of service. This issue is fixed in version 7.23.
- References
Affected packages
Debian:14 / mongoose
Package
- Name
- mongoose
- Purl
- pkg:deb/debian/mongoose?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed7.23+ds-1