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

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