CVE-2023-29456Network attack vector

Stored XSS via inadequate URL scheme validation

Published Jul 13, 2023 · Updated Nov 3, 2025

Cross-site scripting in the Zabbix frontend allows remote authenticated users to execute script through saved links in affected releases. Frontend URL validation parses user-supplied link components but does not reliably reject executable schemes in maps, triggers, and other link-bearing views. The affected branches are 4.0.0 through 4.0.46, 5.0.0 through 5.0.35, 6.0.0 through 6.0.18, 6.4.0 through 6.4.3, and 7.0.0alpha1; exploitation requires permission to add links and a user to open the affected view.

CVSS severity5.7
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in the Zabbix frontend allows remote authenticated users to execute script through saved links in affected releases. Frontend URL validation parses user-supplied link components but does not reliably reject executable schemes in maps, triggers, and other link-bearing views. The affected branches are 4.0.0 through 4.0.46, 5.0.0 through 5.0.35, 6.0.0 through 6.0.18, 6.4.0 through 6.4.3, and 7.0.0alpha1; exploitation requires permission to add links and a user to open the affected view.

The record

CVE
CVE-2023-29456
Published
Jul 13, 2023
Updated
Nov 3, 2025
Vendor
Zabbix
Product
Zabbix
Classifications
CWE-79, CWE-20, CAPEC-63, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 13, 2023CVE 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 <=4.0.46 changes=[{"at":"4.0.47rc1","status":"unaffected"}]
  2. Affected versionversion=5.0.0 <=5.0.35 changes=[{"at":"5.0.36rc1","status":"unaffected"}]
  3. Affected versionversion=6.0.0 <=6.0.18 changes=[{"at":"6.0.19rc1","status":"unaffected"}]
  4. Affected versionversion=6.4.0 <=6.4.3 changes=[{"at":"6.4.4rc1","status":"unaffected"}]
  5. Affected versionversion=7.0.0alpha1 <=7.0.0alpha1 changes=[{"at":"7.0.0alpha2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zabbix · Zabbixversion=4.0.0 <=4.0.46 changes=[{"at":"4.0.47rc1","status":"unaffected"}]; version=5.0.0 <=5.0.35 changes=[{"at":"5.0.36rc1","status":"unaffected"}]; version=6.0.0 <=6.0.18 changes=[{"at":"6.0.19rc1","status":"unaffected"}]; version=6.4.0 <=6.4.3 changes=[{"at":"6.4.4rc1","status":"unaffected"}]; version=7.0.0alpha1 <=7.0.0alpha1 changes=[{"at":"7.0.0alpha2","status":"unaffected"}]

Published CVSS scores

5.7ZabbixCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L
5.4NISTCVSS: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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-20Improper Input Validation
CAPEC-63Cross-Site Scripting (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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