How severe is CVE-2026-5807?

CVE-2026-5807 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-5807 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5807?

CVE-2026-5807 primarily affects Hashicorp Vault. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-5807?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5807 have an EU (EUVD) identifier?

Yes. CVE-2026-5807 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23362.

When was CVE-2026-5807 published?

CVE-2026-5807 was published on 2026-04-17 and last updated on 2026-06-30.

CVE-2026-5807

CVE-2026-5807 is a high-severity vulnerability in Hashicorp Vault with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23362
Weakness: CWE-770
Affected product: Hashicorp Vault
Published: 2026-04-17
Last modified: 2026-06-30

Description

Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.

Frequently asked questions

What is CVE-2026-5807?: Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.
How severe is CVE-2026-5807?: CVE-2026-5807 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-5807 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5807?: CVE-2026-5807 primarily affects Hashicorp Vault. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-5807?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5807 have an EU (EUVD) identifier?: Yes. CVE-2026-5807 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23362.
When was CVE-2026-5807 published?: CVE-2026-5807 was published on 2026-04-17 and last updated on 2026-06-30.

References

Affected products (2)

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

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