CVE-2025-52560: Kanboard Password Reset Poisoning via Host Header Injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-24 · updated 2026-06-17
Weakness: CWE-640

Description

Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.46, Kanboard allows password reset emails to be sent with URLs derived from the unvalidated Host header when the application_url configuration is unset (default behavior). This allows an attacker to craft a malicious password reset link that leaks the token to an attacker-controlled domain. If a victim (including an administrator) clicks the poisoned link, their account can be taken over. This affects all users who initiate a password reset while application_url is not set. This issue has been patched in version 1.2.46.

Affected products

kanboard: before 1.2.46 — fixed in 1.2.46

How to fix

Upgrade to a fixed version: kanboard 1.2.46. Check the vendor advisory for mitigations.

References

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