What is CVE-2019-18393?

CVE-2019-18393 is a medium-severity vulnerability in Igniterealtime Openfire, classified under Path Traversal. CVSS score: 5.3/10. Published 2019-10-24.

How severe is CVE-2019-18393?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2019-18393 known to be exploited?

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

Path Traversal in Igniterealtime Openfire

CVE-2019-18393

PluginServlet.java in Ignite Realtime Openfire through 4.4.2 does not ensure that retrieved files are located under the Openfire home directory, aka a directory traversal vulnerability.

Vulnerability class: Path Traversal (Directory Traversal)

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

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.139 (96.4th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.134 · newest: 0.139 · change: +0.005

Affected products

Igniterealtime Openfire

Weakness classification (CWE)

CWE-22 — Path Traversal

Public proof-of-concept exploits

References

github.com/igniterealtime/Openfire/pull/1498 (Patch, Third Party Advisory)
swarm.ptsecurity.com/openfire-admin-console/

Frequently asked questions

What is CVE-2019-18393?: CVE-2019-18393 is a medium-severity vulnerability in Igniterealtime Openfire, classified under Path Traversal. CVSS score: 5.3/10. Published 2019-10-24.
How severe is CVE-2019-18393?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2019-18393 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.