What is CVE-2022-28354?

CVE-2022-28354 is a medium-severity vulnerability in Mybb Active Threads, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-04-24.

How severe is CVE-2022-28354?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Mybb Active Threads

CVE-2022-28354

In the Active Threads Plugin 1.3.0 for MyBB, the activethreads.php date parameter is vulnerable to XSS when setting a time period.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-04-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% 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

Mybb Active Threads — versions 1.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

community.mybb.com/mods.php (Product)
packetstormsecurity.com/files/171402/MyBB-Active-Threads-1.3.0-Cross-Site-Scrip… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2022-28354?: CVE-2022-28354 is a medium-severity vulnerability in Mybb Active Threads, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-04-24.
How severe is CVE-2022-28354?: Medium severity. CVSS v3 base score is 6.1 out of 10.