How severe is CVE-2019-19040?

CVE-2019-19040 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-2019-19040?

CVE-2019-19040 affects the following packages: org.kairosdb:kairosdb (Maven). Ecosystems affected: Maven.

How do I fix CVE-2019-19040?

Update org.kairosdb:kairosdb to 1.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-19040 is resolved across your whole dependency graph.

How do I detect CVE-2019-19040 in my Maven dependencies?

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

How do I mitigate CVE-2019-19040 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-2019-19040 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2019-19040, including 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-2019-19040?

CVE-2019-19040 has an EPSS (Exploit Prediction Scoring System) score of 0.9%, placing it in the 59th 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-2019-19040?

CVE-2019-19040 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-2019-19040 published, and has it been updated?

CVE-2019-19040 was published on November 17, 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-2019-19040 — kairosdb

MEDIUMFix: kairosdb/kairosdb#593

CVE-2019-19040 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in org.kairosdb:kairosdb. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for org.kairosdb:kairosdb — see the affected versions and patch details below.

Reflected Cross site scripting (XSS) in kairosdb

Also known asGHSA-fjhh-67wv-7gr4

Published

Nov 17, 2019

Updated

Oct 20, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.9%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs59th percentile — riskier than 59% 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.kairosdb:kairosdb

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

KairosDB through 1.2.2 has XSS in view.html because of showErrorMessage in js/graph.js, as demonstrated by view.html?q= with a '"sampling":{"value":"<script>' substring.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.kairosdb:kairosdb`	all versions	1.3.0`org.kairosdb:kairosdb:1.3.0`

Affected Products

1 product · 1 configurations

Application

kairosdbkairosdb_project

≤ 1.2.2

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.

KairosDB through 1.2.2 has XSS in view.html because of showErrorMessage …

github.comNVDNov 2019

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.kairosdb:kairosdb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.kairosdb:kairosdb to 1.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-19040 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

KairosDB through 1.2.2 has XSS in view.html because of showErrorMessage in js/graph.js, as demonstrated by view.html?q= with a '"sampling":{"value":"<script>' substring.

O3 Security · Impact-Aware SCA

Is CVE-2019-19040 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

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

OpenSSF Scorecard

Package health score

kairosdb

3.4/10

Code-Review0/10

Maintained0/10

Branch-Protection3/10

Assessed Nov 2, 2026

Timeline

Disclosed

Nov 17, 2019

First exploit

Nov 19, 2019

2 days after disclosure — rapid exploitation

Last updated

Oct 20, 2026

Identifiers

CVE-2019-19040

GHSA-fjhh-67wv-7gr4

References

Advisorynvd.nist.gov · CVE 2019 19040 Webgithub.com Webgithub.com Evidencegithub.com

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs with CWE-79 are rated as high or higher (top: critical).

CVE-2026-55649CVE-2026-113787CVE-2026-44267CVE-2026-96632CVE-2026-9086CVE-2026-118246CVE-2026-118251CVE-2026-118253Browse all CWE-79

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 20, 2026