How severe is CVE-2017-15911?

CVE-2017-15911 has a CVSS score of 4.8/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2017-15911?

CVE-2017-15911 affects the following packages: org.igniterealtime.openfire:parent (Maven). Ecosystems affected: Maven.

How do I fix CVE-2017-15911?

Update org.igniterealtime.openfire:parent to 4.1.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-15911 is resolved across your whole dependency graph.

How do I detect CVE-2017-15911 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.igniterealtime.openfire:parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2017-15911 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2017-15911 actively exploited in the wild?

No public exploit code has been indexed for CVE-2017-15911 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2017-15911?

CVE-2017-15911 has an EPSS (Exploit Prediction Scoring System) score of 0.7%, placing it in the 54th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2017-15911?

CVE-2017-15911 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2017-15911 published, and has it been updated?

CVE-2017-15911 was published on October 26, 2017 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2017-15911 — parent

MEDIUM

CVE-2017-15911 is a medium-severity (CVSS 4.8) Cross-site Scripting (XSS) vulnerability in org.igniterealtime.openfire:parent. A fix is available for org.igniterealtime.openfire:parent — see the affected versions and patch details below.

Ignite Realtime Openfire Server has Cross-site Scripting vulnerability in admin console

Also known asGHSA-v3h2-4j2r-wqj8

Published

Oct 26, 2017

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs54th percentile — riskier than 54% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.igniterealtime.openfire:parent

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.igniterealtime.openfire:parent`	all versions	4.1.7`org.igniterealtime.openfire:parent:4.1.7`

Affected Products

1 product · 1 configurations

Application

openfireigniterealtime

≤ 4.1.6

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.igniterealtime.openfire:parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.igniterealtime.openfire:parent to 4.1.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-15911 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2017-15911 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

4.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Oct 26, 2017

Last updated

Oct 24, 2026

Identifiers

CVE-2017-15911

GHSA-v3h2-4j2r-wqj8

References

Advisorynvd.nist.gov · CVE 2017 15911 Reportbecomepentester.blogspot.ae · Cross Site Scripting Openfire 4.1.6 CVE 2017 15911 Reportissues.igniterealtime.org · OF 1417

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs affecting parent are rated as high or higher (top: critical).

CVE-2019-20527CVE-2019-18393CVE-2019-20526CVE-2019-20525CVE-2019-20366CVE-2019-18394CVE-2014-2741CVE-2018-11688

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026