DEBIAN-CVE-2026-73261
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-73261
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73261.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-73261
- 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 TCP/IP stack enabled by MG_ENABLE_TCPIP in src/net_builtin.c does not reject a TCP option whose declared opts[1] length exceeds the remaining option bytes. In handle_opt(), a NOP followed by a truncated MSS option causes opts[3] to be read outside the declared options area and used as the low byte of dmss. An unauthenticated remote peer can corrupt the per-connection MSS value so later mg_send() calls transmit truncated or zero-length application payloads while the TCP connection otherwise appears healthy. 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