What’s Vulnerable › Vulnerabilities

CVE-2024-29035: Umbraco's Blind SSRF Leads to Port Scan by using Webhooks

• Severity: medium (CVSS 5.3 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: 2024-04-17 · updated 2026-06-17
• Weakness: CWE-918

Description

Umbraco is an ASP.NET CMS. Failing webhooks logs are available when solution is not in debug mode. Those logs can contain information that is critical. This vulnerability is fixed in 13.1.1.

Affected products

• Umbraco-CMS: from 13.0.0 before 13.1.1 — fixed in 13.1.1

How to fix

Upgrade to a fixed version: Umbraco-CMS 13.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/umbraco/Umbraco-CMS/commit/6b8067815c02ae43161966a8075a3585e1bc4de0
• https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-74p6-39f2-23v3
• https://github.com/umbraco/Umbraco-CMS/commit/6b8067815c02ae43161966a8075a3585e1bc4de0
• https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-74p6-39f2-23v3

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