How severe is CVE-2020-23814?

CVE-2020-23814 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-2020-23814?

CVE-2020-23814 affects the following packages: com.xuxueli:xxl-job (Maven). Ecosystems affected: Maven.

How do I fix CVE-2020-23814?

Update com.xuxueli:xxl-job to 2.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-23814 is resolved across your whole dependency graph.

How do I detect CVE-2020-23814 in my Maven dependencies?

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

How do I mitigate CVE-2020-23814 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-2020-23814 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2020-23814, including 2 in-the-wild exploitations 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-2020-23814?

CVE-2020-23814 has an EPSS (Exploit Prediction Scoring System) score of 1.4%, placing it in the 73th 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-2020-23814?

CVE-2020-23814 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.

Is there exploit tooling available for CVE-2020-23814?

A Nuclei detection template exists for CVE-2020-23814, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2020-23814 published, and has it been updated?

CVE-2020-23814 was published on September 3, 2020 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-2020-23814 — xxl-job

MEDIUMFix: xuxueli/xxl-job@2276285

CVE-2020-23814 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in com.xuxueli:xxl-job. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for com.xuxueli:xxl-job — see the affected versions and patch details below.

xxl-job Multiple cross-site scripting (XSS) vulnerabilities

Also known asGHSA-pqqj-299w-wf53

Published

Sep 3, 2020

Updated

Oct 20, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

2 known

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

EPSS Exploitation Probability

via FIRST.org ↗

1.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs73th percentile — riskier than 73% 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

☕com.xuxueli:xxl-job

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

Multiple cross-site scripting (XSS) vulnerabilities in xxl-job v2.2.0 allow remote attackers to inject arbitrary web script or HTML via (1) AppName and (2)AddressList parameter in JobGroupController.java file.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.xuxueli:xxl-job`	all versions	2.3.0`com.xuxueli:xxl-job:2.3.0`

Affected Products

1 product · 1 configurations

Application

xxl-jobxuxueli

1 version

2.2.0

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.

Multiple cross-site scripting (XSS) vulnerabilities in xxl-job v2.2.0 al…

github.comNVDSep 2020

Report on 1665891.fs1.hubspotusercontent-na1.net

1665891.fs1.hubspotusercontent-na1.netAPIMay 2024

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.xuxueli:xxl-job, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.xuxueli:xxl-job to 2.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-23814 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.

How to detect CVE-2020-23814

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2020-23814 -u https://target

Template: XXL-JOB v2.2.0 — Stored Cross Site Scripting
Severity: medium
Impact: Authenticated attackers can inject malicious JavaScript through the AppName and AddressList parameters, potentially stealing admin session cookies or performing administrative actions on behalf of authenticated users.
Remediation: Upgrade to XXL-JOB version 2.2.1 or later.

Template by ProjectDiscovery nuclei-templates (Sourabh-Sahu), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2020-23814 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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

OpenSSF Scorecard

Package health score

xxl-job

3.8/10

Code-Review0/10

Maintained10/10

Branch-Protection0/10

Assessed Oct 26, 2026

Timeline

Disclosed

Sep 3, 2020

First exploit

Sep 4, 2020

Same day as disclosure — rapid exploitation

Last updated

Oct 20, 2026

Identifiers

CVE-2020-23814

GHSA-pqqj-299w-wf53

References

Advisoryccsq8.com · issues Advisorynvd.nist.gov · CVE 2020 23814 Webgithub.com · 227628567354d3c156951009d683c6fec3006e0e Evidencegithub.com

Related vulnerabilities

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

CVE-2024-24113CVE-2020-24922CVE-2023-33779CVE-2023-26120CVE-2023-27087CVE-2023-0674CVE-2022-36157CVE-2022-29770

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 20, 2026