What is the CVSS score of CVE-2020-5811?

CVE-2020-5811 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 9.4%.

Is there a public PoC exploit available for CVE-2020-5811?

Yes, a public proof-of-concept exploit is available for CVE-2020-5811. Prioritise patching immediately. EPSS: 9.4%.

Is there a patch available for CVE-2020-5811?

Yes, a patch is available for CVE-2020-5811. Update the affected software to the latest version immediately.

Umbraco Cms CVE-2020-5811

MEDIUM

Path Traversal (CWE-22)

2020-12-30 vulnreport@tenable.com

Path Traversal Umbraco Cms

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Dec 30, 2020 - 16:15 nvd

MEDIUM 6.5

DescriptionNVD

AnalysisAI

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. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. 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. Affected products include: Umbraco Umbraco Cms.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.