CVE-2023-23754Network attack vector

Open redirect and XSS via unvalidated MFA input

Published May 30, 2023 · Updated Jan 10, 2025

Open redirect and XSS in Joomla! CMS 4.2.0 through 4.3.1 allow remote attackers to redirect or run script via the MFA selection screen. The MFA selection screen accepts input without sufficient validation, but Joomla! has not published the affected parameter, function, or rendering path. Exploitation requires user interaction with attacker-controlled input and can redirect the browser or execute script in the site context.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect and XSS in Joomla! CMS 4.2.0 through 4.3.1 allow remote attackers to redirect or run script via the MFA selection screen. The MFA selection screen accepts input without sufficient validation, but Joomla! has not published the affected parameter, function, or rendering path. Exploitation requires user interaction with attacker-controlled input and can redirect the browser or execute script in the site context.

The record

CVE
CVE-2023-23754
Published
May 30, 2023
Updated
Jan 10, 2025
Vendor
Joomla! Project
Product
Joomla! CMS
Classifications
CWE-601, CWE-20, CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 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=4.2.0-4.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Joomla! Project · Joomla! CMSversion=4.2.0-4.3.1

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS: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-601URL Redirection to Untrusted Site ('Open Redirect')
CWE-20Improper Input Validation
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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