Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
🐹
🐹 Go
Not in CISA KEV
HIGH severity

GHSA-23jv-v6qj-3fhh

HIGH

GHSA-23jv-v6qj-3fhh is a high-severity (CVSS 7.5) CWE-770 vulnerability in github.com/hashicorp/consul. O3 Security confirms whether GHSA-23jv-v6qj-3fhh is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Denial of Service (DoS) in HashiCorp Consul

Also known asBIT-consul-2020-7219CVE-2020-7219GO-2022-0776
Published
May 18, 2021
Updated
Feb 4, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Feb 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐹github.com/hashicorp/consul

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

HashiCorp Consul and Consul Enterprise up to 1.6.2 HTTP/RPC services allowed unbounded resource usage, and were susceptible to unauthenticated denial of service. Fixed in 1.6.3.

Specific Go Packages Affected

github.com/hashicorp/consul/agent/consul

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/hashicorp/consulall versions1.6.3

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/hashicorp/consul. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update github.com/hashicorp/consul to 1.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-23jv-v6qj-3fhh is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-23jv-v6qj-3fhh is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-23jv-v6qj-3fhh. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

HashiCorp Consul and Consul Enterprise up to 1.6.2 HTTP/RPC services allowed unbounded resource usage, and were susceptible to unauthenticated denial of service. Fixed in 1.6.3. ### Specific Go Packages Affected github.com/hashicorp/consul/agent/consul
O3 Security · Impact-Aware SCA

Is GHSA-23jv-v6qj-3fhh in your dependencies?

O3 detects GHSA-23jv-v6qj-3fhh across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-23jv-v6qj-3fhh: Denial of Service (DoS)… | O3 Security