CVE-2024-11390Network attack vector

Stored XSS via unrestricted Synthetics file upload

Published May 1, 2025 · Updated May 1, 2025

Stored XSS in Elastic Kibana 7.17.6 through 7.17.22 and 8.4.0 through 8.11.3 allows remote authenticated users to run JavaScript. Synthetics file-upload handling accepts crafted HTML or JavaScript files without restricting dangerous types, allowing stored content to execute in a victim's browser. Exploitation requires Synthetics app access or write access to its indices plus a victim who opens the content, exposing browser-accessible data and actions.

CVSS severity5.4
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Elastic Kibana 7.17.6 through 7.17.22 and 8.4.0 through 8.11.3 allows remote authenticated users to run JavaScript. Synthetics file-upload handling accepts crafted HTML or JavaScript files without restricting dangerous types, allowing stored content to execute in a victim's browser. Exploitation requires Synthetics app access or write access to its indices plus a victim who opens the content, exposing browser-accessible data and actions.

The record

CVE
CVE-2024-11390
Published
May 1, 2025
Updated
May 1, 2025
Vendor
Elastic
Product
Kibana
Classifications
CWE-434, CAPEC-592, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.17.6 <7.17.23
  2. Affected versionversion=8.4.0 <8.11.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Elastic · Kibanaversion=7.17.6 <7.17.23; version=8.4.0 <8.11.4

Published CVSS scores

5.4ElasticCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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