Medium severity · published Oct 22, 2026
CVE-2026-115361
OpenBao before 2.6.3 ACL Bypass via Dropped Templated Policy Denial
New
4.1
CVSS
0.2%
EPSS
No
On KEV
Description
OpenBao before 2.6.3 contains an ACL bypass vulnerability that silently drops explicit deny rules based on forbidden identity metadata templates within wildcard grants. Attackers whose identity metadata contains wildcard or path segments can access paths that should be denied within the broader wildcard-granted scope.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openbao · openbao
before 2.6.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-115361
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115361
github.com
https://github.com/openbao/openbao/security/advisories/GHSA-hr5j-3j78-4vh2
www.vulncheck.com
https://www.vulncheck.com/advisories/openbao-before-2.6.3-acl-bypass-via-dropped-templated-policy-denial
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