What’s Vulnerable › Vulnerabilities

CVE-2024-34071: Open Redirect Bypass Protection

• Severity: medium (CVSS 6.1 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: none known
• Published: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-601

Description

Umbraco is an ASP.NET CMS used by more than 730.000 websites. Umbraco has an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice before the vulnerable is exposed. This vulnerability has been patched in version(s) 8.18.14, 10.8.6, 12.3.10 and 13.3.1.

Affected products

• Umbraco-CMS: from 8.18.5 before 8.18.14; from 10.5.0 before 10.8.6; from 12.0.0 before 12.3.10; from 13.0.0 before 13.3.1 — fixed in 10.8.6, 12.3.10, 13.3.1, 8.18.14

How to fix

Upgrade to a fixed version: Umbraco-CMS 10.8.6, 12.3.10, 13.3.1, 8.18.14. Check the vendor advisory for mitigations.

References

• https://github.com/umbraco/Umbraco-CMS/commit/5f24de308584b9771240a6db1a34630a5114c450
• https://github.com/umbraco/Umbraco-CMS/commit/c17d4e1a600098ec524e4126f4395255476bc33f
• https://github.com/umbraco/Umbraco-CMS/commit/c8f71af646171074c13e5c34f74312def4512031
• https://github.com/umbraco/Umbraco-CMS/commit/d8df405db4ea884bb4b96f088d10d9a2070cf024
• https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-j74q-mv2c-rxmp
• https://github.com/umbraco/Umbraco-CMS/commit/5f24de308584b9771240a6db1a34630a5114c450
• https://github.com/umbraco/Umbraco-CMS/commit/c17d4e1a600098ec524e4126f4395255476bc33f
• https://github.com/umbraco/Umbraco-CMS/commit/c8f71af646171074c13e5c34f74312def4512031
• https://github.com/umbraco/Umbraco-CMS/commit/d8df405db4ea884bb4b96f088d10d9a2070cf024
• https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-j74q-mv2c-rxmp

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