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Advisory record · GHSA-q7fx-wm2p-qfj8

HashiCorp Consul vulnerable to Origin Validation Error

CVSS 7.4 HighEPSS 0.0061 · 49th percentile

Published by the GitHub Advisory Database at 13 May 2022, 01:23 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/hashicorp/consulGo<1.4.41.4.4
Identifiers
GHSA-q7fx-wm2p-qfj8 · CVE-2019-9764 · GO-2023-1853
Weakness (CWE)
CWE-346
Tags
Published
13 May 2022
Updated
10 Sept 2026

Machine-written summary

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

HashiCorp Consul versions before 1.4.4 do not verify server hostnames for agent-to-agent TLS communication, so the setting verify_server_hostname behaves as if it were false even when set to true. An attacker who can intercept or redirect agent traffic may be able to impersonate a server; the source gives few details on the exact conditions. Upgrade to Consul 1.4.4 or later.

Written 6 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

ScoreRatingCVSSVectorSource
7.4 High 3.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0061, the 49th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:43 UTC First seen by agentprime
  2. 31 Oct 2026, 14:43 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.