{"id":"BIT-openbao-2026-55770","summary":"OpenBao: LDAPi ldaputil (wrong escape func)","details":"OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, OpenBao used EscapeLDAPValue, an RFC 4514 distinguished-name escaping function, where RFC 4515 LDAP search-filter escaping was required in sdk/helper/ldaputil/client.go GetUserDN. With the LDAP authentication backend configured for an Active Directory UPNDomain path or UserDN and UserAttr binding, an attacker-controlled username containing filter metacharacters could alter the search predicate and select a different directory entry because EscapeLDAPValue does not neutralize the characters handled by ldap.EscapeFilter. A resulting token could be associated with another LDAP identity and gain access to secrets, policies, or modification capabilities assigned to that identity. This issue is fixed in version 2.5.5.","aliases":["CVE-2026-55770","GHSA-6mwx-4547-5vc9","GO-2026-5182"],"modified":"2026-09-25T14:25:54.748421990Z","published":"2026-09-25T12:28:08.577Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:openbao:openbao:*:*:*:*:*:go:*:*"]},"references":[{"type":"WEB","url":"https://github.com/openbao/openbao/commit/10b7825c714c1ef25b6c3c1c2cd6ecd8747c0659"},{"type":"WEB","url":"https://github.com/openbao/openbao/commit/8077f96bdc02137b0a072146b6f9ca11c96c549c"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3306"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3313"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.5.5"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.6.0"},{"type":"WEB","url":"https://github.com/openbao/openbao/security/advisories/GHSA-6mwx-4547-5vc9"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55770"}],"affected":[{"package":{"name":"openbao","ecosystem":"Bitnami","purl":"pkg:bitnami/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.5.5"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/openbao/BIT-openbao-2026-55770.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}