What is CVE-2020-5843?

CVE-2020-5843 is a medium-severity vulnerability in Codologic Codoforum, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-01-07.

How severe is CVE-2020-5843?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Codologic Codoforum

CVE-2020-5843

Codoforum 4.8.3 allows XSS in the admin dashboard via a category to the Manage Users screen.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-01-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Codologic Codoforum — versions 4.8.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

codologic.com/forum/index.php (Release Notes, Vendor Advisory)
vyshnavvizz.blogspot.com/2020/01/persistent-cross-site-scripting-admin.html (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-5843?: CVE-2020-5843 is a medium-severity vulnerability in Codologic Codoforum, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-01-07.
How severe is CVE-2020-5843?: Medium severity. CVSS v3 base score is 4.8 out of 10.