What’s Vulnerable › Vulnerabilities
CVE-2026-12624: Vault vulnerable to LIST authorization bypass via trailing-slash strip
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-10 · updated 2026-08-28
- Weakness: CWE-863
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.
Affected products
- HashiCorp Vault: before 2.0.3 — fixed in 2.0.3
How to fix
Upgrade to a fixed version: HashiCorp Vault 2.0.3. Check the vendor advisory for mitigations.
References
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