7.5

CVE-2026-15972: hashicorp consul

CVSS: 7.5v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-15972DEBIAN-CVE-2026-15972CGA-4294-36fw-c7wm
Published 07-08-2026Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2026-15972 is a high (CVSS 7.5) vulnerability in hashicorp consul. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.55%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-8GWX-XM6Q-3HPQ

Timeline

  1. 07-08-2026
    PublishedVulnerability first disclosed.
  2. 10-08-2026
    Last modifiedVulnerability information updated.

Description

Consul Community Edition and Consul Enterprise 1.13.0 through 2.0.2 are vulnerable to an unauthenticated denial of service through unbounded connection acceptance on the external gRPC listeners. A remote attacker may exhaust agent file descriptors, goroutines, and memory by opening many incomplete connections, potentially preventing legitimate clients from connecting. This vulnerability, CVE-2026-15972, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

+0.16 pp

From 0.39% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.55%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard4 products
  • consul-1.22All versions (No fix recorded)
  • consul-2.0All versions (No fix recorded)
  • consul-fips-1.22All versions (No fix recorded)
  • consul-fips-2.0< 2.0.3-r0
Hashicorp2 products
Debian1 product
  • consulAll versions (No fix recorded)
Ubuntu1 product
  • consulAll versions (No fix recorded)

4 vendors · 8 products

References

7 links