# CVE-2022-2837: coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints

Source: https://junglewise.ai/threats/cve-2022-2837-coredns-vulnerable-to-improper-restriction-of-communication  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-03-03  
License: CC BY 4.0 with a link back

CVE-2022-2837 · Severity: low · CVSS 3.1 · Published 2023-03-03

coreDNS vulnerable to Improper Restriction of Communication Channel to Intended Endpoints

Technologies: [github.com/coredns/coredns (Go)](https://junglewise.ai/threats/technologies/github-com-coredns-coredns). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2022-2837 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2022-2837 being exploited in the wild.

**How severe is CVE-2022-2837?** Low severity, with a CVSS score of 3.1, published 3 March 2023.

**Which products and versions are affected?** github.com/coredns/coredns (Go) SEMVER:introduced=0,last_affected=1.9.3.

**Is there a fix for CVE-2022-2837?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2022-2837?** Check whether you run github.com/coredns/coredns (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- github.com/coredns/coredns (Go) SEMVER:introduced=0,last_affected=1.9.3

## Identifiers

- CVE-2022-2837
- GHSA-h828-v5pv-33qx

## Related threats

- [CoreDNS RFC 2136 UPDATE bypass in DoH/DoQ/gRPC](https://junglewise.ai/threats/cve-2026-86003-coredns-rfc-2136-update-bypass-in-doh-doq-grpc)
- [CoreDNS unauthenticated memory exhaustion in DoH, DoQ, and DoH3](https://junglewise.ai/threats/cve-2026-82399-coredns-unauthenticated-memory-exhaustion-in-doh-doq-and-doh3)
- [CoreDNS panic in transfer plugin via k8s_external headless services](https://junglewise.ai/threats/cve-2026-62994-coredns-panic-in-transfer-plugin-via-k8s-external-headless)
- [CoreDNS TSIG authentication bypass in gRPC, QUIC, and DoH transports](https://junglewise.ai/threats/cve-2026-35579-coredns-tsig-authentication-bypass-in-grpc-quic-and-doh)
- [CoreDNS incorrect authorization in transfer plugin ACL selection](https://junglewise.ai/threats/cve-2026-33489-coredns-incorrect-authorization-in-transfer-plugin-acl-selection)