CVE-2026-12624

Vault vulnerable to LIST authorization bypass via trailing-slash strip

State: Published
Severity: 4.3 Medium
Published: Aug 10, 2026
Updated: Aug 11, 2026
Reserved: Jun 18, 2026

Description

Vault’s ACL policy engine did not consistently enforce a wildcard (glob) deny rule against LIST requests made with a trailing slash on the denied path. This may allow a token holding a broader allow rule alongside a narrower wildcard deny rule to enumerate the names of entries beneath a path it was intended to be denied access to. This vulnerability (CVE-2026-12624) is fixed in Vault Community Edition 2.0.3 and Vault Enterprise 2.0.3, 1.21.8, 1.20.13, and 1.19.19.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	HashiCorp

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
VaultHashiCorp	before 2.0.3Affected
Vault EnterpriseHashiCorp	before 2.0.3Affectedfrom 1.21.8Not affectedfrom 1.20.13Not affectedfrom 1.19.19Not affected

References

https://discuss.hashicorp.com/t/hcsec-2026-26-vault-vulnerable-to-list-authorization-bypass-via-trailing-slash-strip/77632

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