CVE-2022-24349Network attack vector

Authenticated reflected XSS via unvalidated eventsource parameter

Published Mar 9, 2022 · Updated Nov 3, 2025

Reflected XSS in Zabbix Frontend allows remote authenticated users to alter a victim's page through a crafted action-page link. The actionconf.php handler rereads the eventsource request value instead of using its validated integer variable, allowing crafted input to reach page output. Exploitation requires frontend credentials, a victim who follows the link, and network reachability to an attacker-controlled server; script executes in the frontend origin and can modify displayed content.

CVSS severity4.6
Medium
EPSS probability1.22%
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 Zabbix Frontend allows remote authenticated users to alter a victim's page through a crafted action-page link. The actionconf.php handler rereads the eventsource request value instead of using its validated integer variable, allowing crafted input to reach page output. Exploitation requires frontend credentials, a victim who follows the link, and network reachability to an attacker-controlled server; script executes in the frontend origin and can modify displayed content.

The record

CVE
CVE-2022-24349
Published
Mar 9, 2022
Updated
Nov 3, 2025
Vendor
Zabbix
Product
Zabbix Frontend
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=4.0.0-4.0.38
  2. Affected versionversion=5.0.0-5.0.20
  3. Affected versionversion=5.4.0-5.4.10
  4. Affected versionversion=6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zabbix · Zabbix Frontendversion=4.0.0-4.0.38; version=5.0.0-5.0.20; version=5.4.0-5.4.10; version=6.0

Published CVSS scores

2.1NIST NVDAV:N/AC:H/Au:S/C:N/I:P/A:N
4.4NIST NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
4.6ZabbixCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

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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