GHSA-ch7v-37xg-75ph: github.com/coredns/coredns (CVE-2022-2835)

coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints

CVSS 4.4 MediumEPSS 0.0018 · 7th percentile

Published by the GitHub Advisory Database at 3 Mar 2023, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
github.com/coredns/coredns	Go	<=1.9.3	No fixed version yet

Identifiers

GHSA-ch7v-37xg-75ph · CVE-2022-2835

Weakness (CWE)

CWE-923

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

CoreDNS versions up to and including 1.9.3 are affected. An attacker who can make a malicious user-level change, as described, can reroute internal calls to some internal services that are accessed by their service.namespace.svc name. The source gives few details about the required access or exact impact. No fix is listed.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.4	Medium	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	GitHub Advisory Database

CISA KEV Not listed.
EPSS 0.0018, the 7th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:15 UTC First seen by agentprime
31 Oct 2026, 14:15 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.