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/ldaput…
Historical advisory saved 30 Oct 2026 09:57:15 UTC. The publisher may have updated it since then. Latest advisory.
euvd · EUVD-2026-78683
PublishedOpenBao 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.
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datePublished: Sep 15, 2026, 3:44:35 PM
dateUpdated: Sep 17, 2026, 11:59:03 AM
- Source published
- Sep 15, 2026, 3:44:35 PM (timezone not stated)
- Source modified
- Sep 17, 2026, 11:59:03 AM (timezone not stated)
- Saved here
- 30 Oct 2026 09:57:15 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
EUVD CVSS 3.1 · 6.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N