Low severity · published Oct 22, 2026
CVE-2026-115359
OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Role-Based Rate Limit Quota Bypass via Request Parsing
New
3.7
CVSS
0.2%
EPSS
No
On KEV
Description
OpenBao before 2.6.4 and 2.7.x before 2.7.1 contains a flaw in its rate limit quota subsystem where role resolution fails for requests with form-encoded bodies or forwarded certificates, so quota rules scoped to backend-specific roles are not enforced. Valid callers can repeatedly issue tokens without consuming the configured role-based rate limit budget.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openbao · openbao
before 2.6.4; 2.7.0 before 2.7.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-115359
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115359
github.com
https://github.com/openbao/openbao/security/advisories/GHSA-5v22-543h-wg96
www.vulncheck.com
https://www.vulncheck.com/advisories/openbao-before-2.6.4-and-2.7.0-before-2.7.1-role-based-rate-limit-quota-bypass-via-request-parsing
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