CVE-2023-38435Network attack vector

Reflected XSS via misencoded request parameters

Published Jul 25, 2023 · Updated Feb 13, 2025

Reflected XSS in Apache Felix Health Check Webconsole Plugin 2.0.2 and earlier allows remote attackers to execute scripts through crafted requests. HealthCheckWebconsolePlugin reflects the tags and overrideGlobalTimeout parameters into single-quoted input attributes using an encoder that leaves apostrophes unescaped. Exploitation requires a victim to open the crafted request; script runs in the Web Console origin and can read or change data available to that session.

CVSS severity6.1
Medium
EPSS probability2.25%
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 Apache Felix Health Check Webconsole Plugin 2.0.2 and earlier allows remote attackers to execute scripts through crafted requests. HealthCheckWebconsolePlugin reflects the tags and overrideGlobalTimeout parameters into single-quoted input attributes using an encoder that leaves apostrophes unescaped. Exploitation requires a victim to open the crafted request; script runs in the Web Console origin and can read or change data available to that session.

The record

CVE
CVE-2023-38435
Published
Jul 25, 2023
Updated
Feb 13, 2025
Vendor
The Apache Software Foundation
Product
Apache Felix Health Check Webconsole Plugin
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=0 <=2.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Felix Health Check Webconsole Pluginversion=0 <=2.0.2

Published CVSS scores

6.1GitHub Advisory DatabaseCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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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