LDAP Injection Affecting github.com/openbao/openbao/builtin/logical/openldap package, versions <2.5.5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published30 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
CVE-2026-55770 Â (opens in a new tab)How to fix?
Upgrade github.com/openbao/openbao/builtin/logical/openldap to version 2.5.5 or higher.
Overview
Affected versions of this package are vulnerable to LDAP Injection in the GetUserDN process due to improper escaping of user-controlled input when constructing LDAP search filters. An attacker can impersonate arbitrary users, including administrative accounts, by injecting crafted input into the username field during authentication. This is only exploitable if the LDAP authentication backend is enabled and the attacker can supply input to the login process.
Workaround
This vulnerability can be mitigated by configuring the LDAP service account with the least privileges necessary and using explicit attribute constraints in the user filter to limit the search scope.