CVE-2026-26310

EUVD-2026-10802
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub_MCNA
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
envoyproxyenvoy
𝑥
< 1.34.13
envoyproxyenvoy
1.35.0 ≤
𝑥
< 1.35.8
envoyproxyenvoy
1.36.0 ≤
𝑥
< 1.36.5
envoyproxyenvoy
1.37.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3cw6-2j68-868p