CVE-2025-11374 | Consul's KV endpoint is vulnerable to denial of service

Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS) due to incorrect Content Length header validation. This vulnerability, CVE-2025-11374, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

Published: 2025-10-28 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-11374 is rated Low Risk (36.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.37%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-11374

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.37% +0.36%
2 2025-10-29 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-11374

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2025-11374

GitHub Security Advisory for CVE-2025-11374

GHSA-7g3r-8c6v-hfmr · Severity: medium · Ecosystem: go — Consul key/value endpoint is vulnerable to denial of service

OS Trackers for CVE-2025-11374

vendor priority summary link
alpine — CVE-2025-11374: 1 source package rows (consul); 5 state rows across 1 repos (edge-community); fixed 0, open 5. https://security.alpinelinux.org/vuln/CVE-2025-11374
debian end-of-life CVE-2025-11374 end-of-life priority: Debian including 1 source packages (consul), 1 status rows across 1 suites (bullseye): open 1. https://security-tracker.debian.org/tracker/CVE-2025-11374
redhat medium — https://access.redhat.com/security/cve/CVE-2025-11374
ubuntu medium CVE-2025-11374 medium priority: Ubuntu including 1 source packages (consul), 7 status rows across 7 suites (bionic, focal, jammy, noble, plucky, questing, upstream): needs-triage 4, DNE 3. https://ubuntu.com/security/CVE-2025-11374

Affected software / configurations for CVE-2025-11374

Vendor Product Version Raw CPE
hashicorp consul < 1.18.12 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
hashicorp consul < 1.22.0 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul >= 1.19.0, < 1.20.8 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
hashicorp consul >= 1.21.0, < 1.21.6 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*

References for CVE-2025-11374

cvelogic Threat Intelligence