CVE-2022-39839

Name: CVE-2022-39839
Creator: NVD / NIST
Published: 2022-09-05T06:15:18.417+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2022-39839 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Cotonti Siena 0.9.20 allows admins to conduct stored XSS attacks via a forum post.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.40%

31.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Cotonti	Cotonti Siena	0.9.20

References

https://github.com/Cotonti/Cotonti/issues/1661Exploit, Issue Tracking, Technical Description
https://github.com/Cotonti/Cotonti/issues/1661Exploit, Issue Tracking, Technical Description

Timeline

Published: Sep 5, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39839?

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

How severe is CVE-2022-39839?

CVE-2022-39839 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39839?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39839?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST