CVE-2023-4432Public exploitNetwork attack vector

Script execution via unescaped API viewer attributes

Published Aug 19, 2023 · Updated Oct 2, 2024

Reflected XSS in Cockpit CMS before 2.6.4 allows remote authenticated users to execute script through its REST or GraphQL viewer. The viewer templates insert API keys, an OpenAPI URL, and color values into HTML attributes or CSS without escaping attacker-controlled characters. Exploitation requires access to a viewer and causes injected script to run in the browser context that renders the crafted values.

CVSS severity8.3
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Cockpit CMS before 2.6.4 allows remote authenticated users to execute script through its REST or GraphQL viewer. The viewer templates insert API keys, an OpenAPI URL, and color values into HTML attributes or CSS without escaping attacker-controlled characters. Exploitation requires access to a viewer and causes injected script to run in the browser context that renders the crafted values.

The record

CVE
CVE-2023-4432
Published
Aug 19, 2023
Updated
Oct 2, 2024
Vendor
Cockpit HQ
Product
Cockpit CMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 2024Record 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=0 <2.6.4
  2. Affected versionversion=unspecified <2.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cockpit HQ · Cockpit CMSversion=0 <2.6.4; version=unspecified <2.6.4

Published CVSS scores

8.3@huntrdevCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

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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