CVE-2026-26310 PUBLISHED

Crash for scoped ip address in Envoy during DNS

Assigner: GitHub_M
Reserved: 13.02.2026 Published: 10.03.2026 Updated: 10.03.2026

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 5.9

Product Status

Vendor envoyproxy
Product envoy
Versions
  • Version >= 1.37.0, < 1.37.1 is affected
  • Version >= 1.36.0, < 1.36.5 is affected
  • Version >= 1.35.0, < 1.35.9 is affected
  • Version < 1.34.13 is affected

References

Problem Types

  • CWE-20: Improper Input Validation CWE