What’s Vulnerable › Vulnerabilities

CVE-2022-22691: Umbraco Password Reset URL Poison

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-18 · updated 2026-06-17
• Weakness: CWE-640

Description

The password reset component deployed within Umbraco uses the hostname supplied within the request host header when building a password reset URL. It may be possible to manipulate the URL sent to Umbraco users when so that it points to the attackers server thereby disclosing the password reset token if/when the link is followed. A related vulnerability (CVE-2022-22690) could allow this flaw to become persistent so that all password reset URLs are affected persistently following a successful attack. See the AppCheck advisory for further information and associated caveats.

Affected products

• Umbraco-CMS: before 9.2.0 — fixed in 9.2.0

How to fix

Upgrade to a fixed version: Umbraco-CMS 9.2.0. Check the vendor advisory for mitigations.

References

• https://appcheck-ng.com/umbraco-applicationurl-overwrite-persistent-password-reset-poison-cve-2022-22690-cve-2022-22691/
• https://appcheck-ng.com/umbraco-applicationurl-overwrite-persistent-password-reset-poison-cve-2022-22690-cve-2022-22691/

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