Medium 5.9Published Mar 10, 2026

CVE-2026-26310Crash for scoped ip address in Envoy during DNS

Updated under an hour ago (Oct 27, 2026, 3:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for envoyproxy envoy

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

envoyproxy envoy envoyproxy:envoy (from the name)	from 1.37.0, < 1.37.1; from 1.36.0, < 1.36.5; from 1.35.0, < 1.35.9; before 1.34.13	CNA record
envoyproxy envoy envoyproxy:envoy	before 1.34.13; from 1.35.0 before 1.35.8; from 1.36.0 before 1.36.5; 1.37.0	NVD

References

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-3cw6-2j68-868p	x-refsource-confirm, exploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.