TI-2024-19217 Aliases CVE-2024-29035 GHSA-74p6-39f2-23v3

Umbraco's Blind SSRF Leads to Port Scan by using Webhooks

LOW 24CWE-918Published 2024-04-17 · Updated 2024-08-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00431 37th percentileScored 2026-11-07

Fix Fixed Umbraco-CMS (umbraco): 13.1.1Umbraco.Cms.Core (NuGet): 13.1.1+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
umbraco	Umbraco-CMS	13.0.0 to before 13.1.1	13.1.1	Patch available	CNA
—	Umbraco.Cms.Core (NuGet)	13.0.0 to before 13.1.1	13.1.1	Patch available	GHSA-74p6-39f2-23v3
—	Umbraco.Cms.Web.BackOffice (NuGet)	13.0.0 to before 13.1.1	13.1.1	Patch available	GHSA-74p6-39f2-23v3

Umbraco-CMS Vendorumbraco Affected 13.0.0 to before 13.1.1 Fixed in 13.1.1 Patch available CNA
Umbraco.Cms.Core (NuGet) Vendor— Affected 13.0.0 to before 13.1.1 Fixed in 13.1.1 Patch available GHSA-74p6-39f2-23v3
Umbraco.Cms.Web.BackOffice (NuGet) Vendor— Affected 13.0.0 to before 13.1.1 Fixed in 13.1.1 Patch available GHSA-74p6-39f2-23v3

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:umbraco:umbraco_cms::::::::	13.0.0 to before 13.1.1	Vulnerable	umbraco

cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:* Versions 13.0.0 to before 13.1.1 Vulnerable ·umbraco

Remediation

Fix · CNA Umbraco-CMS (umbraco) Fixed in 13.1.1
Fix · GHSA-74p6-39f2-23v3 Umbraco.Cms.Core (NuGet) Fixed in 13.1.1 Advisory →
Fix · GHSA-74p6-39f2-23v3 Umbraco.Cms.Web.BackOffice (NuGet) Fixed in 13.1.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2024-29035
2026-10-03 Alias added: GHSA-74p6-39f2-23v3

References

Patch 1

https://github.com/umbraco/Umbraco-CMS/commit/6b8067815c02ae43161966a8075a3585e1bc4de0

Advisory 2

Other 1

https://github.com/umbraco/Umbraco-CMS

TI-2025-41183 An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute… CVSS 3.1CRITICAL 10.0
TI-2012-05477 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE CVSS 4.0CRITICAL 9.3
TI-2021-22392 Umbraco v8.14.1 - 'baseUrl' SSRF CVSS 4.0MEDIUM 6.9
TI-2024-36846 A stored cross-site scripting (XSS) vulnerability in Umbraco CMS v14.3.1 allows attackers… CVSS 3.1MEDIUM 6.5
TI-2019-15240 Umbraco CMS 4.11.8 through 7.15.10, and 7.12.4, allows Remote Code Execution by… CVSS 3.1HIGH 7.2
TI-2020-04738 Cross-site scripting in Umbraco CMS CVSS 3.1MEDIUM 5.4

See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences