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VulnerabilityPublished

CVE-2026-105765: HashiCorp Consul · Missing Authorization

Affects HashiCorp ConsulSource CVE Database V5

0

Not known to be exploited · CVSS 7.5 High : upgrade to 2.1.0 soon.

Data as of 26 Oct 2026, 17:57 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 2.1.0, 1.21.19
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade Consul and Consul Enterprise to 2.1.0; Consul Enterprise to 1.21.19.

Affected software

ProductAffectedFixed in
HashiCorpConsulAffected
  • >=1.17.0 <2.1.0
Fixed in
  • 2.1.0
HashiCorpConsul EnterpriseAffected
  • >=1.17.0 <1.21.19
Fixed in
  • 2.1.0
GitHubConsulpkg:github/ConsulOther threatsAffected
  • >=1.17.0 <2.1.0
Fixed in
  • 2.1.0
GitHubConsul Enterprisepkg:github/Consul EnterpriseOther threatsAffected
  • >=1.17.0 <1.21.19
Fixed in
  • 1.21.19

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

Description

HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 are vulnerable to an authorization bypass in the agent's service mesh leaf certificate API that may allow an attacker without a valid ACL token to retrieve a cached service leaf certificate and its private key. This vulnerability (CVE-2026-105765) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.

References

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