diff --git a/java/jenkins/credentials/lookup-null-authentication.yaml b/java/jenkins/credentials/lookup-null-authentication.yaml
new file mode 100644
index 0000000..f813870
--- /dev/null
+++ b/java/jenkins/credentials/lookup-null-authentication.yaml
@@ -0,0 +1,29 @@
+rules:
+  - id: codevigilant.java.jenkins.credentials.lookup-null-authentication
+    patterns:
+      - pattern-either:
+          - pattern: CredentialsProvider.lookupCredentials($TYPE, $CTX, null)
+          - pattern: CredentialsProvider.lookupCredentials($TYPE, $CTX, null, $EXTRA)
+          - pattern: com.cloudbees.plugins.credentials.CredentialsProvider.lookupCredentials($TYPE, $CTX, null)
+          - pattern: com.cloudbees.plugins.credentials.CredentialsProvider.lookupCredentials($TYPE, $CTX, null, $EXTRA)
+    message: |
+      Detected CredentialsProvider.lookupCredentials invoked with a null
+      authentication argument. In the Credentials plugin, a null Authentication
+      is treated as ACL.SYSTEM, so the lookup returns credentials the current
+      user and current item may not be allowed to use. Resolve credentials with
+      the caller's authentication and the owning Item/ItemGroup, e.g.
+      CredentialsProvider.findCredentialById(id, type, item).
+    metadata:
+      category: security
+      cwe: "CWE-522: Insufficiently Protected Credentials"
+      owasp: "A01:2021 - Broken Access Control"
+      technology: jenkins
+      confidence: HIGH
+      references:
+        - https://www.jenkins.io/doc/developer/security/
+        - https://javadoc.jenkins.io/plugin/credentials/com/cloudbees/plugins/credentials/CredentialsProvider.html
+      source: independent security review
+      license: MIT
+    languages: [java]
+    mode: search
+    severity: HIGH