What is CVE-2023-49089?

CVE-2023-49089 is a high-severity vulnerability in Umbraco Umbraco-Cms, classified under Path Traversal. CVSS score: 7.7/10. Published 2023-12-12.

How severe is CVE-2023-49089?

High severity. CVSS v3 base score is 7.7 out of 10.

Path Traversal in Umbraco Umbraco-Cms

CVE-2023-49089

Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.0, Backoffice users with permissions to create packages can use path traversal and thereby write outside of the expected location. Versions 8.18.10, 10.8.1, and 12.3.0 contain a patch for this issue.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2023-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (49.9th percentile), scored 2026-11-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Umbraco Umbraco-Cms — versions >= 8.0.0, < 8.18.10, >= 9.0.0-rc001, < 10.8.1, >= 11.0.0-rc1, < 12.3.4
Umbraco Cms

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6324-52pr-h4p5 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-49089?: CVE-2023-49089 is a high-severity vulnerability in Umbraco Umbraco-Cms, classified under Path Traversal. CVSS score: 7.7/10. Published 2023-12-12.
How severe is CVE-2023-49089?: High severity. CVSS v3 base score is 7.7 out of 10.