What is CVE-2019-18394?

CVE-2019-18394 is a critical-severity vulnerability in Igniterealtime Openfire, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2019-10-24.

How severe is CVE-2019-18394?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-18394 known to be exploited?

11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Igniterealtime Openfire

CVE-2019-18394

A Server Side Request Forgery (SSRF) vulnerability in FaviconServlet.java in Ignite Realtime Openfire through 4.4.2 allows attackers to send arbitrary HTTP GET requests.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2019-10-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.323 (98.3th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.323 · newest: 0.323 · change: 0.000

Affected products

Igniterealtime Openfire

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

References

github.com/igniterealtime/Openfire/pull/1497 (Patch, Third Party Advisory)
swarm.ptsecurity.com/openfire-admin-console/

Frequently asked questions

What is CVE-2019-18394?: CVE-2019-18394 is a critical-severity vulnerability in Igniterealtime Openfire, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2019-10-24.
How severe is CVE-2019-18394?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-18394 known to be exploited?: 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.