How severe is CVE-2019-6804?

CVE-2019-6804 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2019-6804?

CVE-2019-6804 affects the following packages: org.rundeck:rundeck (Maven). Ecosystems affected: Maven.

How do I fix CVE-2019-6804?

Update org.rundeck:rundeck to 3.0.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-6804 is resolved across your whole dependency graph.

How do I detect CVE-2019-6804 in my Maven dependencies?

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

How do I mitigate CVE-2019-6804 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-2019-6804 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2019-6804, including 1 documented proof-of-concept exploit on Exploit-DB and 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2019-6804?

CVE-2019-6804 has an EPSS (Exploit Prediction Scoring System) score of 5.3%, placing it in the 93th 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-2019-6804?

CVE-2019-6804 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-2019-6804 published, and has it been updated?

CVE-2019-6804 was published on January 25, 2019 and was last updated on October 20, 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-2019-6804 — rundeck

MEDIUMFix: rundeck/rundeck@e992e94

CVE-2019-6804 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.rundeck:rundeck. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for org.rundeck:rundeck — see the affected versions and patch details below.

Rundeck Community Edition vulnerable to Cross-site Scripting

Also known asGHSA-4262-wr7p-gpcj

Published

Jan 25, 2019

Updated

Oct 20, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

2 known

Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

5.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs93th percentile — riskier than 93% 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.rundeck:rundeck

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

An XSS issue was discovered on the Job Edit page in Rundeck Community Edition before 3.0.13, related to assets/javascripts/workflowStepEditorKO.js and views/execution/_wfitemEdit.gsp.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.rundeck:rundeck`	all versions	3.0.13`org.rundeck:rundeck:3.0.13`

Affected Products

1 product · 1 configurations

Application

rundeckpagerduty

< 3.0.13

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-46251webappsjava

Rundeck Community Edition < 3.0.13 - Persistent Cross-Site Scripting

by Ishaq Mohammed · Jan 28, 2019

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.rundeck:rundeck, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.rundeck:rundeck to 3.0.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-6804 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

An XSS issue was discovered on the Job Edit page in Rundeck Community Edition before 3.0.13, related to assets/javascripts/workflowStepEditorKO.js and views/execution/_wfitemEdit.gsp.

O3 Security · Impact-Aware SCA

Is CVE-2019-6804 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

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

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template or Metasploit module yet. 2 public proof-of-concept references are listed on this page.

OpenSSF Scorecard

Package health score

rundeck

3.7/10

Code-Review10/10

Maintained10/10

Branch-Protection4/10

Assessed Oct 26, 2026

Timeline

Disclosed

Jan 25, 2019

First exploit

Jan 28, 2019

3 days after disclosure — rapid exploitation

Last updated

Oct 20, 2026

Identifiers

CVE-2019-6804

GHSA-4262-wr7p-gpcj

References

Advisorydocs.rundeck.com · version 3.0.13 Advisorygithub.com Advisorynvd.nist.gov · CVE 2019 6804 Webgithub.com · e992e94bba22d9fca3a669f0d02c85b80a19f848 Webexploit-db.com Packagegithub.com · rundeck Evidenceexploit-db.com

Related vulnerabilities

Also affects rundeck

This CVE is medium severity; 3 of 3 other CVEs affecting rundeck are rated as high or higher (top: high).

CVE-2023-48222CVE-2022-31044CVE-2020-11009

Same weakness: CWE-79

This CVE is medium severity; 5 of 5 other CVEs with CWE-79 are rated as high or higher (top: critical).

CVE-2026-88986CVE-2026-63197CVE-2026-55649CVE-2026-113787CVE-2026-44267Browse all CWE-79

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 20, 2026