What is the CVSS score of CVE-2021-3734?

CVE-2021-3734 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2021-3734?

Yes, a public proof-of-concept exploit is available for CVE-2021-3734. Prioritise patching immediately. EPSS: 0.4%.

Is there a patch available for CVE-2021-3734?

Yes, a patch is available for CVE-2021-3734. Update the affected software to the latest version immediately.

Yourls CVE-2021-3734

HIGH

Improper Restriction of Rendered UI Layers or Frames (CWE-1021)

2021-08-26 security@huntr.dev

XSS Yourls

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Aug 26, 2021 - 13:15 nvd

HIGH 8.8

DescriptionNVD

yourls is vulnerable to Improper Restriction of Rendered UI Layers or Frames

AnalysisAI

yourls is vulnerable to Improper Restriction of Rendered UI Layers or Frames. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-1021. yourls is vulnerable to Improper Restriction of Rendered UI Layers or Frames Affected products include: Yourls.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.