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VulnerabilityPublished Updated

CVE-2026-19017: HashiCorp Consul · Missing Authorization

Affects HashiCorp ConsulSource CVE Database V5

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Not known to be exploited · CVSS 6.8 Medium : upgrade to 2.0.3 when convenient.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.0.3, 1.21.17
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade Consul and Consul Enterprise to 2.0.3; Consul Enterprise to 1.21.17.

Affected software

ProductAffectedFixed in
HashiCorpConsulAffected
  • >=1.18.21 <2.0.3
Fixed in
  • 2.0.3
HashiCorpConsul EnterpriseAffected
  • >=1.18.21 <1.21.17
Fixed in
  • 2.0.3
GitHubConsulpkg:github/ConsulOther threatsAffected
  • >=1.18.21 <2.0.3
Fixed in
  • 2.0.3
GitHubConsul Enterprisepkg:github/Consul EnterpriseOther threatsAffected
  • >=1.18.21 <1.21.17
Fixed in
  • 1.21.17

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

This vulnerability is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. Users should upgrade to these versions or later to remediate the issue.

Description

Consul Community Edition and Consul Enterprise 1.18.21 through 2.0.2 are vulnerable to a partial arbitrary file read when configured to use the Vault Connect CA provider with JWT or AppRole authentication. A privileged attacker with `operator:write` permission may direct Consul to read and forward credential files outside the intended scope, potentially leading to the exfiltration of sensitive secrets from the Consul server host. This vulnerability, CVE-2026-19017, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

References

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