Vulnerability · Published Sep 24, 2026 · Assigned by mitre
CVE-2026-97152
High 8.6
In plain English
A high-severity heap buffer overflow in Nanomsg from Nanomsg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.3%top 75.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Nanomsg versions 0.5-beta through 1.x before 1.2.3 has a remotely exploitable buffer overflow in the WebSocket transport, due to an unchecked copy of the Sec-WebSocket-Version header, through snprintf.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nanomsg | no fix listed | DEBIAN-CVE-2026-97152 |
| Debian:13 | nanomsg | no fix listed | DEBIAN-CVE-2026-97152 |
| Debian:14 | nanomsg | no fix listed | DEBIAN-CVE-2026-97152 |
| Ubuntu:22.04:LTS | nanomsg | no fix listed | UBUNTU-CVE-2026-97152 |
| Ubuntu:24.04:LTS | nanomsg | no fix listed | UBUNTU-CVE-2026-97152 |
| Ubuntu:26.04:LTS | nanomsg | no fix listed | UBUNTU-CVE-2026-97152 |
| Ubuntu:26.10 | nanomsg | no fix listed | UBUNTU-CVE-2026-97152 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:H/SI:H/SA:H