Openfire allows potential identity spoofing via unsafe CN parsing
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| igniterealtime | Openfire | affected |
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| Vendor | Product | Versions |
|---|---|---|
| Igniterealtime | Openfire | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-29235 | Openfire has potential identity spoofing issue via unsafe CN parsing |
Github GHSA |
GHSA-w252-645g-87mp | Openfire has potential identity spoofing issue via unsafe CN parsing |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.234% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Igniterealtime
Igniterealtime openfire |
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| Vendors & Products |
Igniterealtime
Igniterealtime openfire |
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Openfire allows potential identity spoofing via unsafe CN parsing | |
| Weaknesses | CWE-290 | |
| References |
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| Metrics |
cvssV3_1
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