CVE-2026-115365

7.5 highEPSS 0.3%

OpenBao from 2.3.0 before 2.6.3 contains an incorrect authorization vulnerability in its ACL policy cache that allows tokens to reference policies from arbitrary namespaces using specially crafted policy names. Attackers holding such tokens can gain capabilities of cached policies in other namespaces, including the root namespace, to act across namespace boundaries.

CVSS 4.0: 7.5CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.6CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-25)
CWE: CWE-863
Published: 2026-10-22
Modified: 2026-10-23
Record from: the NVD, synced 2026-10-23

References

https://github.com/openbao/openbao/security/advisories/GHSA-mjch-vcw3-hhmf
https://www.vulncheck.com/advisories/openbao-2.3.0-before-2.6.3-incorrect-authorization-via-policy-cache-namespace-traversal

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