XenForo < 2.3.13 Authentication Bypass via OAuth2 Token Endpoint
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| XenForo | XenForo | unaffected |
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Xenforo | Xenforo |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.685% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:xenforo:xenforo:*:*:*:*:*:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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|---|---|---|
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Xenforo
Xenforo xenforo |
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| Vendors & Products |
Xenforo
Xenforo xenforo |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | XenForo before 2.3.13 contains an authentication bypass vulnerability in the OAuth2 token endpoint that allows unauthenticated attackers to obtain valid token pairs by submitting empty values for client_secret and code_verifier parameters. Attackers can exploit PHP truthy evaluation logic, which treats empty strings as false and skips client secret validation and PKCE code verifier validation, to exchange a valid authorization code for a token pair without proving client identity or holding the PKCE commitment. | |
| Title | XenForo < 2.3.13 Authentication Bypass via OAuth2 Token Endpoint | |
| Weaknesses | CWE-697 | |
| References |
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| Metrics |
cvssV3_1
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