What is the CVSS score of CVE-2021-3964?

CVE-2021-3964 has a CVSS 3.1 base score of 5.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.8%.

Is there a public PoC exploit available for CVE-2021-3964?

Yes, a public proof-of-concept exploit is available for CVE-2021-3964. Prioritise patching immediately. EPSS: 0.8%.

Is there a patch available for CVE-2021-3964?

Yes, a patch is available for CVE-2021-3964. Update the affected software to the latest version immediately.

Elgg CVE-2021-3964

MEDIUM

Authorization Bypass Through User-Controlled Key (CWE-639)

2021-12-01 security@huntr.dev

Authentication Bypass Elgg

5.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.9 MEDIUM

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Dec 01, 2021 - 12:15 nvd

MEDIUM 5.9

DescriptionNVD

elgg is vulnerable to Authorization Bypass Through User-Controlled Key

AnalysisAI

elgg is vulnerable to Authorization Bypass Through User-Controlled Key. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-639. elgg is vulnerable to Authorization Bypass Through User-Controlled Key Affected products include: Elgg.

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.