Vault ACL Policy Evaluation May Allow Bypass of Deny Restrictions

published 2026-10-07 32 d ago modified 2026-10-16 23 d ago also BIT-vault-2026-89322 , EUVD-2026-94648

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits: 0; none known

Vault and Vault Enterprise did not consistently evaluate ACL policies against the canonical form of resource and policy names. This may allow an authenticated user with delegated permissions to bypass an explicit deny restriction and access a protected resource or assign a denied policy, potentially leading to privilege escalation. This vulnerability (CVE-2026-89322) is fixed in Vault Community Edition 2.1.2, and Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23.

Patch / fix

fixed in 3

bitnami vault 2.1.2
HashiCorp Vault 2.1.2
HashiCorp Vault Enterprise 1.19.23, 1.20.17, 1.21.12, 2.1.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 32 d ago (2026-10-08)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
OSV	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
bitnami	vault	>=0.0.1, <2.1.2	2.1.2

Affected products

HashiCorp Vault
HashiCorp Vault Enterprise

Classification

Weakness

CWE-178 Improper Handling of Case Sensitivity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary