XSS in Jforum

CVE-2021-40509

ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (58.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Jforum — versions 2.7.0
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Mailing List, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-40509?: CVE-2021-40509 is a medium-severity vulnerability in Jforum, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-04.
How severe is CVE-2021-40509?: Medium severity. CVSS v3 base score is 5.4 out of 10.