What is the CVSS score of CVE-2020-8131?

CVE-2020-8131 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 5.2%.

Is there a public PoC exploit available for CVE-2020-8131?

Yes, a public proof-of-concept exploit is available for CVE-2020-8131. Prioritise patching immediately. EPSS: 5.2%.

Is there a patch available for CVE-2020-8131?

Yes, a patch is available for CVE-2020-8131. Update the affected software to the latest version immediately.

Yarn CVE-2020-8131

HIGH

Path Traversal (CWE-22)

2020-02-24 support@hackerone.com

RCE Path Traversal Yarn

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Feb 24, 2020 - 15:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

11 npm packages depend on yarn (6 direct, 5 indirect)

Ecosystem-wide dependent count for version 1.22.0.

DescriptionNVD

AnalysisAI

Arbitrary filesystem write vulnerability in Yarn before 1.22.0 allows attackers to write to any path on the filesystem and potentially lead to arbitrary code execution by forcing the user to install. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. Arbitrary filesystem write vulnerability in Yarn before 1.22.0 allows attackers to write to any path on the filesystem and potentially lead to arbitrary code execution by forcing the user to install a malicious package. Affected products include: Yarnpkg Yarn. Version information: before 1.22.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.