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TI-2025-41183 Aliases CVE-2025-67288GHSA-54mj-vcvj-q3v5

An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute…

Priority HIGH 82CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution, Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-434 and CWE-79.

Summary

An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code by uploading a crafted PDF file. NOTE: this is disputed by the Supplier because the responsibility for file validation (as shown in the documentation) belongs to the system administrator who is implementing Umbraco CMS in their environment, not to Umbraco CMS itself. The Supplier also states that PDF JavaScript runs in a completely isolated sandbox, not the browser's DOM context, which means that privilege boundaries would not be crossed, a related issue to CVE-2023-49279.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0055 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—Umbraco.Cms (NuGet)up to 16.3.3—No fix listedGHSA-54mj-vcvj-q3v5
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • Umbraco.Cms (NuGet) Vendor— Affected up to 16.3.3 Fixed in — No fix listed GHSA-54mj-vcvj-q3v5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:umbraco:umbraco_cms:16.3.3:*:*:*:*:*:*:*16.3.3Vulnerableumbraco
  • cpe:2.3:a:umbraco:umbraco_cms:16.3.3:*:*:*:*:*:*:* Versions 16.3.3 Vulnerable ·umbraco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-67288
  2. 2026-10-03 Alias added: GHSA-54mj-vcvj-q3v5

References

Advisory 2

Other 4

  • 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
  • TI-2012-01170 The FeedProxy.aspx script in Umbraco 4.7.0 allows remote attackers to proxy requests on… CVSS 3.1CRITICAL 9.8
See all 56 →

Sources

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