Vendor
XenForo
25 known vulnerabilities.
Products
11 results · Clear filters · Feed
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High 7.2CVE-2026-74239 Public exploit
XenForo < 2.3.13 Path Traversal via Style Archive Importer on Windows
XenForo before 2.3.13 contains a path traversal vulnerability in the style archive importer on Windows deployments that allows authenticated non-super administrators with style permissions to write arbitrary files outside the intended extraction directory by …
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High 7.5CVE-2026-73316 Public exploit
XenForo < 2.3.13 Payment Replay via PayPal REST Payment Provider
XenForo before 2.3.13 contains a payment replay vulnerability in the PayPal REST payment provider that allows attackers to process the same webhook payload multiple times by exploiting a missing duplicate transaction ID check. Attackers can replay a valid web…
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High 8.6CVE-2026-73315 Public exploit
XenForo < 2.3.13 SSRF via PayPal REST Webhook Handler
XenForo before 2.3.13 contains a server-side request forgery vulnerability in the PayPal REST webhook handler that allows unauthenticated attackers to cause the server to make outbound HTTP requests to arbitrary destinations by supplying a crafted certificate…
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High 7.5CVE-2026-73314 Public exploit
XenForo < 2.3.13 Signature Verification Bypass via PayPal REST Webhook
XenForo before 2.3.13 contains a signature verification logic error in the PayPal REST webhook handler that allows unauthenticated attackers to bypass payment signature validation by submitting a webhook request with an unsupported auth_algo header value. Whe…
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High 7.4CVE-2026-73312 Public exploit
XenForo < 2.3.13 Refresh Token Replay via Expired Access Token
XenForo before 2.3.13 contains a refresh token replay vulnerability that allows attackers to reuse a refresh token multiple times by exploiting the failure to mark tokens as consumed when the parent access token has expired. Attackers can repeatedly submit th…
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High 7.4CVE-2026-73311 Public exploit
XenForo < 2.3.13 OAuth2 Authorization Code Reuse
XenForo before 2.3.13 contains an OAuth2 authorization code reuse vulnerability that allows attackers to obtain unauthorized token pairs by submitting a previously used authorization code. Attackers can exploit the failure to invalidate or mark authorization …
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High 7.4CVE-2026-73309 Public exploit
XenForo < 2.3.13 Authentication Bypass via OAuth2 Token Endpoint
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 explo…
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High 7.2
XenForo Remote Code Execution via Authenticated Admin
XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.
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High 7.5
XenForo Path Disclosure via open_basedir Exceptions
XenForo before 2.3.7 discloses filesystem paths through exception messages triggered by open_basedir restrictions. This allows an attacker to obtain information about the server's directory structure.
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High 8.8
XenForo Template Method Call Restriction Bypass
XenForo before 2.3.7 does not properly restrict methods callable from within templates. A loose prefix match was used instead of a stricter first-word match for methods accessible through callbacks and variable method calls in templates, potentially allowing …
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High 8.8
XenForo OAuth2 Unauthorized Scope Request
XenForo before 2.3.5 allows OAuth2 client applications to request unauthorized scopes. This affects any customer using OAuth2 clients on any version of XenForo 2.3 prior to 2.3.5, potentially allowing client applications to gain access beyond their intended a…