CVE-2025-59154
Description
Openfire is an XMPP server licensed under the Open Source Apache License. Openfire’s SASL EXTERNAL mechanism for client TLS authentication contains a vulnerability in how it extracts user identities from X.509 certificates. Instead of parsing the structured ASN.1 data, the code calls X509Certificate.getSubjectDN().getName() and applies a regex to look for CN=. This method produces a provider-dependent string that does not escape special characters. In SunJSSE (sun.security.x509.X500Name), for example, commas and equals signs inside attribute values are not escaped. As a result, a malicious certificate can embed CN= inside another attribute value (e.g. OU="CN=admin,"). The regex will incorrectly interpret this as a legitimate Common Name and extract admin. If SASL EXTERNAL is enabled and configured to map CNs to user accounts, this allows the attacker to impersonate another user. The fix is included in Openfire 5.0.2 and 5.1.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.igniterealtime.openfire:xmppserverMaven | < 5.0.2 | 5.0.2 |
Affected products
1- Range: attic/origin/master, attic/trunk, v3.9.2, …
Patches
19b82de15acc2skip known failing tests
1 file changed · +1 −1
.github/workflows/continuous-integration-workflow.yml+1 −1 modified@@ -266,7 +266,7 @@ jobs: domain: 'example.org' adminAccountUsername: 'admin' adminAccountPassword: 'admin' - disabledTests: 'EntityCapsTest,SoftwareInfoIntegrationTest,XmppConnectionIntegrationTest,StreamManagementTest,WaitForClosingStreamElementTest,IoTControlIntegrationTest,ModularXmppClientToServerConnectionLowLevelIntegrationTest' + disabledTests: 'EntityCapsTest,SoftwareInfoIntegrationTest,XmppConnectionIntegrationTest,StreamManagementTest,WaitForClosingStreamElementTest,IoTControlIntegrationTest,ModularXmppClientToServerConnectionLowLevelIntegrationTest,testRosterUpdateGeneratesPushToInterestedResourceOtherResourceWithInitialPresence,testEndUserSessionTwoUsers,testRosterDeleteGeneratesPushToInterestedResourceOtherResourceWithInitialPresence' - name: Stop CI server if: ${{ always() && steps.startCIServer.conclusion == 'success' }} # TODO figure out if this is correct. The intent is to have the server stopped if it was successfully started, even if the tests fail. Failing tests should still cause the job to fail. uses: ./.github/actions/stopserver-action
Vulnerability mechanics
Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
7- github.com/advisories/GHSA-w252-645g-87mpghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-59154ghsaADVISORY
- github.com/igniterealtime/Openfire/blob/8d073dda36905da0fdee7cb623c025a01a5cbf6b/xmppserver/src/main/java/org/jivesoftware/util/cert/CNCertificateIdentityMapping.javanvdWEB
- github.com/igniterealtime/Openfire/security/advisories/GHSA-w252-645g-87mpnvdWEB
- igniterealtime.atlassian.net/browse/OF-3122nvdWEB
- igniterealtime.atlassian.net/browse/OF-3123nvdWEB
- igniterealtime.atlassian.net/browse/OF-3124nvdWEB
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