Vulnerability · Published Oct 13, 2026 · Assigned by mitre
CVE-2026-95115
High 7.5
In plain English
A high-severity out-of-bounds write in the libwebsockets package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 53.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability in libwebsockets main 106d542c allows a remote attacker to cause a denial of service via the LEJP JSON parser
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libwebsockets | no fix listed | DEBIAN-CVE-2026-95115 |
| Debian:13 | libwebsockets | no fix listed | DEBIAN-CVE-2026-95115 |
| Debian:14 | libwebsockets | no fix listed | DEBIAN-CVE-2026-95115 |
| Ubuntu:26.10 | libwebsockets | no fix listed | UBUNTU-CVE-2026-95115 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/warmcat/libwebsockets/commit/736a4a26fce344766bc6618df87bf32193829dd0
- https://github.com/warmcat/libwebsockets/commit/c404a205a98323a7f60e69fae532c5d26bf4a62a
- https://github.com/warmcat/libwebsockets/issues/3663
- https://gist.github.com/1820893135-pixel/d4246b2ecc927193ea1fad50810e9901