How severe is CVE-2025-11374?

CVE-2025-11374 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-11374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-11374?

CVE-2025-11374 primarily affects Hashicorp Consul. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-11374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-11374 have an EU (EUVD) identifier?

Yes. CVE-2025-11374 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36559.

When was CVE-2025-11374 published?

CVE-2025-11374 was published on 2025-10-28 and last updated on 2026-06-17.

CVE-2025-11374

CVE-2025-11374 is a medium-severity vulnerability in Hashicorp Consul with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-36559
Weakness: CWE-770
Affected product: Hashicorp Consul
Published: 2025-10-28
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-11374?: 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.
How severe is CVE-2025-11374?: CVE-2025-11374 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-11374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-11374?: CVE-2025-11374 primarily affects Hashicorp Consul. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-11374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-11374 have an EU (EUVD) identifier?: Yes. CVE-2025-11374 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36559.
When was CVE-2025-11374 published?: CVE-2025-11374 was published on 2025-10-28 and last updated on 2026-06-17.

References

https://discuss.hashicorp.com/t/hcsec-2025-29-consuls-kv-endpoint-is-vulnerable-to-denial-of-service/76724

Affected products (2)

cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*

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