CVE-2025-62709: ClipBucket v5 is vulnerable to password reset link manipulation

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-11-20 · updated 2026-10-18
Weakness: CWE-640

Description

ClipBucket v5 is an open source video sharing platform. In ClipBucket version 5.5.2, a change to network.class.php causes the application to dynamically build the server URL from the incoming HTTP Host header when the configuration base_url is not set. Because Host is a client-controlled header, an attacker can supply an arbitrary Host value. This allows an attacker to cause password-reset links (sent by forget.php) to be generated with the attacker’s domain. If a victim follows that link and enters their activation code on the attacker-controlled domain, the attacker can capture the code and use it to reset the victim’s password and take over the account. This issue has been patched in version 5.5.2#162.

Affected products

MacWarrior clipbucket-v5: from 5.3 before 5.5.2-163 — fixed in 5.5.2-163

How to fix

Upgrade to a fixed version: MacWarrior clipbucket-v5 5.5.2-163. Check the vendor advisory for mitigations.

References

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