How severe is CVE-2019-18394?

CVE-2019-18394 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-18394 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18394?

CVE-2019-18394 affects Igniterealtime Openfire. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18394?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-18394 published?

CVE-2019-18394 was published on 2019-10-24 and last updated on 2026-06-17.

CVE-2019-18394

CVE-2019-18394 is a critical-severity vulnerability in Igniterealtime Openfire with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 32% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 32% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Igniterealtime Openfire
Published: 2019-10-24
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-18394?: CVE-2019-18394 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-18394 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18394?: CVE-2019-18394 affects Igniterealtime Openfire. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18394?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-18394 published?: CVE-2019-18394 was published on 2019-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:igniterealtime:openfire:*:*:*:*:*:*:*:*

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