What is CVE-2017-15911?

CVE-2017-15911 is a medium-severity vulnerability in Igniterealtime Openfire, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2017-10-26.

How severe is CVE-2017-15911?

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

XSS in Igniterealtime Openfire

CVE-2017-15911

The Admin Console in Ignite Realtime Openfire Server before 4.1.7 allows arbitrary client-side JavaScript code execution on victims who click a crafted setup/setup-host-settings.jsp?domain= link, aka XSS. Session ID and data theft may follow as well as the possibility of bypassing CSRF protections, injection of iframes to establish communication channels, etc. The vulnerability is present after login into the application.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-10-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Igniterealtime Openfire

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

becomepentester.blogspot.ae/2017/10/Cross-Site-Scripting-Openfire-4.1.6-CVE-201… (Third Party Advisory, Issue Tracking)
issues.igniterealtime.org/browse/OF-1417 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2017-15911?: CVE-2017-15911 is a medium-severity vulnerability in Igniterealtime Openfire, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2017-10-26.
How severe is CVE-2017-15911?: Medium severity. CVSS v3 base score is 4.8 out of 10.