What is the CVSS score of CVE-2021-40347?

CVE-2021-40347 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 1.2%.

Is there a public PoC exploit available for CVE-2021-40347?

Yes, a public proof-of-concept exploit is available for CVE-2021-40347. Prioritise patching immediately. EPSS: 1.2%.

Is there a patch available for CVE-2021-40347?

Yes, a patch is available for CVE-2021-40347. Update the affected software to the latest version immediately.

Postorius CVE-2021-40347

MEDIUM

2021-09-10 cve@mitre.org

Information Disclosure Postorius

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Sep 10, 2021 - 19:15 nvd

MEDIUM 5.4

DescriptionNVD

An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.

AnalysisAI

An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Technical ContextAI

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.