CVE-2026-9357
LowCVSS 3.5Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
A vulnerability in vBulletin 6.x in an unknown function of the Login component leads to cross-site scripting (XSS). The attack can be initiated remotely. The exploit has been made public.
Risk Assessment
A remote attacker can inject a malicious script that executes in the user's browser, potentially leading to session theft or data leakage.
Recommendation
Contact the vendor for a patch and implement temporary mitigations such as input filtering on the login form.
Original NVD description (English source)
A vulnerability was found in vBulletin 6.x. This impacts an unknown function of the component Login. Performing a manipulation results in cross site scripting. It is possible to initiate the attack remotely. The exploit has been made public and could be used. VulDB is withholding an extended redistribution of exploit details to prevent simplified exploitation. The vendor was contacted early about this disclosure but did not respond in any way.