What is CVE-2020-35199?

CVE-2020-35199 is a medium-severity vulnerability in Igniterealtime Openfire, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-12-12.

How severe is CVE-2020-35199?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Igniterealtime Openfire

CVE-2020-35199

Ignite Realtime Openfire 4.6.0 has create-bookmark.jsp groupchatJID Stored XSS.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-12-12 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.006 (47.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Igniterealtime Openfire — versions 4.6.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.exploit-db.com/exploits/49233 (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2020-35199?: CVE-2020-35199 is a medium-severity vulnerability in Igniterealtime Openfire, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-12-12.
How severe is CVE-2020-35199?: Medium severity. CVSS v3 base score is 5.4 out of 10.