What is the CVSS score of CVE-2022-39839?

CVE-2022-39839 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2022-39839?

Yes, a public proof-of-concept exploit is available for CVE-2022-39839. Prioritise patching immediately. EPSS: 0.4%.

Cotonti Siena CVE-2022-39839

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2022-09-05 cve@mitre.org

XSS Cotonti Siena

4.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.8 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Sep 05, 2022 - 06:15 nvd

MEDIUM 4.8

DescriptionNVD

Cotonti Siena 0.9.20 allows admins to conduct stored XSS attacks via a forum post.

AnalysisAI

Cotonti Siena 0.9.20 allows admins to conduct stored XSS attacks via a forum post. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cotonti Siena 0.9.20 allows admins to conduct stored XSS attacks via a forum post. Affected products include: Cotonti Cotonti Siena.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.