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TI-2026-59478 Aliases CVE-2026-87107GHSA-h73p-f2fq-8x97

Consul vulnerable to an authorization bypass in the catalog deregistration path

Priority LOW 24CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00314 24th percentileScored 2026-11-07
Fix Fixed Consul (HashiCorp): 2.0.4Consul Enterprise (HashiCorp): 2.0.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
HashiCorpConsul1.21.0 to before 2.0.42.0.4Patch availableCNA
HashiCorpConsul Enterprise1.21.0 to before 2.0.42.0.4Patch availableCNA
  • Consul VendorHashiCorp Affected 1.21.0 to before 2.0.4 Fixed in 2.0.4 Patch available CNA
  • Consul Enterprise VendorHashiCorp Affected 1.21.0 to before 2.0.4 Fixed in 2.0.4 Patch available CNA

Remediation

  • Fix · CNA Consul (HashiCorp) Fixed in 2.0.4
  • Fix · CNA Consul Enterprise (HashiCorp) Fixed in 2.0.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    HashiCorp Consul, Consul Enterprise 2.0.4

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-59475 Consul vulnerable to an authorization bypass in the catalog node-write pathPriority LOW 36
    • TI-2026-60046 Consul vulnerable to an authorization bypass in the Connect service meshPriority LOW 33
    • TI-2026-59477 Consul vulnerable to a denial of service in the native RPC listenerPriority LOW 29
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-87107
  2. 2026-10-03 Alias added: GHSA-h73p-f2fq-8x97

References

Other 1

  • TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
  • TI-2021-18437 HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4… CVSS 3.1HIGH 8.8
  • TI-2026-06570 Nomad vulnerable to path traversal in dynamic host volume which may lead to code execution CVSS 3.1HIGH 8.8
  • TI-2020-17753 The official Consul Docker images 0.7.1 through 1.4.2 contain a blank password for a root… CVSS 3.1CRITICAL 9.8
  • TI-2026-13641 consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode CVSS 3.1CRITICAL 10.0
  • TI-2026-13778 terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode CVSS 3.1CRITICAL 10.0
See all 246 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences