Description (CNA)
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 URL in webhook headers without scheme, hostname, or allowlist validation. Attackers can submit a crafted POST to the PayPal webhook callback endpoint to reach internal network resources including cloud instance metadata services, potentially disclosing IAM credentials or enabling secondary internal service exploitation.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| XenForo / XenForo | affected 0 before 2.3.13 |
CWE
CWE-918
References
- https://xenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/
- https://xenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/
- https://bombobombone.github.io/posts/cve-2026-73315/
- https://github.com/BomboBombone/CVE-2026-73315
- https://www.vulncheck.com/advisories/xenforo-ssrf-via-paypal-rest-webhook-handler
ADP enrichment
No English description supplied.
No references supplied.