CVE-2026-26310: Envoy vulnerable to crash for scoped ip address during DNS

March 10, 2026 (updated March 11, 2026)

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.

References

github.com/advisories/GHSA-3cw6-2j68-868p
github.com/envoyproxy/envoy
github.com/envoyproxy/envoy/security/advisories/GHSA-3cw6-2j68-868p
nvd.nist.gov/vuln/detail/CVE-2026-26310

Code Behaviors & Features

Detect and mitigate CVE-2026-26310 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →