vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-87090

Consul vulnerable to an authorization bypass in the catalog node-write path

HIGH
8.3
CVSS Score
Published: September 10, 2026 at 06:54 PM UTC
Updated: September 10, 2026 at 07:58 PM UTC
1 product affected across 1 vendorConsul

Using Consul by HashiCorp?

Get instant alerts when new vulnerabilities affect Consul - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog node-write path that may allow an authenticated attacker to delete another node's catalog registration and take over its node identity. An attacker with a token granting node-write permission on any single node name may exploit this issue if they can obtain the node ID of a node they do not control. This vulnerability (CVE-2026-87090) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Consul· Hashicorp
60%
0.1.0 ≤ v < 2.0.40.1.0
Affected range stops below 2.0.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://discuss.hashicorp.com/t/hcsec-2026-34-consul-vulnerable-to-an-authorization-bypass-in-the-catalog-node-write-path/77736

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.3HIGHHashiCorp
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-863

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card