CVE-2026-129349

Description

When authentication caching is enabled on DefaultLdapRealm, after a user logs in successfully once, subsequent logins for that user succeed with any password. A cached authentication skips the LDAP bind, and the AllowAllCredentialsMatcher installed by default in DefaultLdapRealm accepts any credentials, allowing an attacker who knows a valid username to authenticate as that user. This issue affects all Apache Shiro versions through 3.0.0, only when using DefaultLdapRealm (or JndiLdapRealm) with authenticationCachingEnabled set to true, which is not the default. Mitigation: Upgrade to version 3.0.1 or later, which fixes the issue by no longer installing AllowAllCredentialsMatcher by default. Alternatively, disable authentication caching on the LDAP realm (this is the default), or configure a credentials matcher, such as SimpleCredentialsMatcher, that verifies credentials against the cached authentication info.

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

• 9.1CVSS 4.0, Criticalfrom the CNA (apache)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/S:N/AU:Y/R:U/V:C/RE:L/U:Red

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Timeline

1. 15 Nov 2026 Published

Weakness

• CWE-287

References

• lists.apache.orgvendor-advisory