CVE-2026-26310

highpriority · track · 30EPSS 0.004 · 35 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.41% (35th) EPSS

CVSS 7.5 · high

Is it mine?

26 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 2.2 · impact 3.6

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20US

affected products (26)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Google Cloud Platform Envoy Proxyall versionscert_bundDEcpe:/a:google:cloud_platform:envoy_proxy
Google Cloud Platform Istioall versionscert_bundDEcpe:/a:google:cloud_platform:istio
Google Cloud Platform Service Mesh <1.26.8-asm.3all versionscert_bundDE
Google Cloud Platform Service Mesh <1.27.8-asm.7all versionscert_bundDE
Google Cloud Platform Service Mesh <1.28.5-asm.9all versionscert_bundDE
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Google Cloud Platform≤ Service Mesh <1.26.8-asm.3cert_bundDE
Google Cloud Platform≤ Service Mesh <1.28.5-asm.9cert_bundDE
Google Cloud Platform≤ Service Mesh <1.27.8-asm.7cert_bundDE
envoyproxy envoy≤ < 1.34.13enisa_euvdEU
envoyproxy envoy1.35.0, → 1.35.9enisa_euvdEU
envoyproxy envoy1.36.0, → 1.36.5enisa_euvdEU
envoyproxy envoy1.37.0, → 1.37.1enisa_euvdEU
envoyproxy envoy< 1.34.13nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
envoyproxy envoy1.35.0 → 1.35.8nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
envoyproxy envoy1.36.0 → 1.36.5nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
envoyproxy envoy= 1.37.0nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
Bitnami envoy< 1.34.13osvUSpkg:bitnami/envoy
Bitnami envoy1.35.0 → 1.35.9osvUSpkg:bitnami/envoy

showing 20 of 26

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0704Google Cloud Platform Envoy Proxy, Istio und Service Mesh: Mehrere SchwachstellenDeutsch2026-03-11csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Google Cloud Platform ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
GHSA-3cw6-2j68-868pEnvoy vulnerable to crash for scoped ip address during DNS2026-03-10ghsa · osvUS
### Summary 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. ### Details The crashing function is `Utility::getAddressWithPort`. The crash occurs if a string containing a scoped IPv6 address is passed to this function. This vulnerability affects: 1. The **original src filter**: If the filter is configured and the original source is a scoped IPv6 address, it will cause a crash. 2. **DNS response address resolution**: If a DNS response contains a scoped IPv6 address, this will also trigger the crash. ### PoC To reproduce the vulnerability: 1. **Method A (Original Src Filter):** Configure the `original src` filter in Envoy and provide a scoped IPv6 address as the original source. 2. **Method B (DNS Resolution):** Trigger a DNS resolution process within Envoy where the DNS response contains a scoped IPv6 address. ### Impact This is a Denial of Service (DoS) vulnerability. It impacts users who have the `original src` filter configured or whose Envoy instances resolve addresses from DNS responses that may contain scoped IPv6 addresses.
BIT-envoy-2026-26310Crash for scoped ip address in Envoy during DNS2026-03-12vendor · osvUS
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.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2026-03-10modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

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