How severe is CVE-2017-15911?

CVE-2017-15911 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-15911 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-15911?

CVE-2017-15911 affects Igniterealtime Openfire. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-15911?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-15911 published?

CVE-2017-15911 was published on 2017-10-26 and last updated on 2026-06-17.

CVE-2017-15911

CVE-2017-15911 is a medium-severity vulnerability in Igniterealtime Openfire with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Igniterealtime Openfire
Published: 2017-10-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-15911?: CVE-2017-15911 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-15911 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-15911?: CVE-2017-15911 affects Igniterealtime Openfire. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-15911?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-15911 published?: CVE-2017-15911 was published on 2017-10-26 and last updated on 2026-06-17.

References

Affected products (1)

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

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Threat intelligence

Threat-intel indicators referencing this CVE:

189.149.254.122 (ipv4-addr)
124.167.239.164 (ipv4-addr)