6.4

CVE-2026-115804: Consul vulnerable to an authorization bypass in health check registration

Awaiting analysis
AliasesUBUNTU-CVE-2026-115804CGA-49jr-m33g-jwxmCGA-9f8v-5p7j-qjj3
Published 26-10-2026Last modified 26-10-2026

Vulnerability summary

CVE-2026-115804 is a medium (CVSS 6.4) vulnerability in hashicorp consul. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 21.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.29%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 26-10-2026
    PublishedVulnerability first disclosed.
  2. 26-10-2026
    Last modifiedVulnerability information updated.

Description

HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may allow an authenticated user to modify health checks belonging to another service on the same node. This vulnerability (CVE-2026-115804) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

27-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard3 products
  • consul-1.22All versions (No fix recorded)
  • consul-2.0All versions (No fix recorded)
  • consul-fips-1.22All versions (No fix recorded)
Hashicorp2 products
Ubuntu1 product
  • consulAll versions (No fix recorded)

3 vendors · 6 products

References

8 links