Input validation error in envoy - CVE-2026-26310
Published: August 26, 2026
Vulnerability identifier: #VU145843
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-26310
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the DNS handling functionality when processing scoped ip address input. A remote attacker can send crafted input to cause a denial of service.
Affected software
envoy
How to mitigate CVE-2026-26310
Install security update from vendor's website.
envoy - addressed in versions 1.34.13, 1.35.9, 1.36.5, 1.37.1