CVE-2020-5811 EXPLOIT
6.5
MEDIUM · CVSS 3.1 · EPSS 9.5% (pctl 95)
Patch early
A public exploit exists.
Description
An authenticated path traversal vulnerability exists during package installation in Umbraco CMS <= 8.9.1 or current, which could result in arbitrary files being written outside of the site home and expected paths when installing an Umbraco package.
Scoring
| CVSS | 6.5 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| EPSS | 9.48% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2020-12-30 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| umbraco | umbraco cms |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Umbraco CMS 8.9.1 - Directory Traversal | 2021-08-31 |
References
- http://packetstormsecurity.com/files/163965/Umbraco-CMS-8.9.1-Traversal-Arbitrary-File-Write.html
- https://www.tenable.com/security/research/tra-2020-59
- http://packetstormsecurity.com/files/163965/Umbraco-CMS-8.9.1-Traversal-Arbitrary-File-Write.html
- https://www.tenable.com/security/research/tra-2020-59
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