OpenBao: LDAPi ldaputil (wrong escape func)
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.
BIT-openbao-2026-55770
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-openbao-2026-55770
openbao
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2.5.5
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.5"
}
]
}
],
"package": {
"name": "openbao",
"purl": "pkg:bitnami/openbao",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/openbao/BIT-openbao-2026-55770.json"
}
}
]- Related CVEs
- CVE-2026-55770
Source reference:
/aliases
Publisher severity
medium
Source reference: /database_specific/severity
- Event
- #15289 · Revision 1
- Added to Heist Feed
- Publisher date