CVE-2023-25440Public exploitNetwork attack vector

Authenticated script execution via unsanitized contact names

Published May 23, 2023 · Updated Jan 31, 2025

Stored XSS in CiviCRM for WordPress 5.58.0 and earlier allows remote authenticated users to execute JavaScript in another user's browser. The Quick Add widget stores unneutralized first- or last-name input from a new contact and renders it as HTML in the dashboard's Recently Added view. Exploitation requires the access CiviCRM backend privilege and a second user to load that view, enabling script execution in that user's browser.

CVSS severity5.4
Medium
EPSS probability2.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in CiviCRM for WordPress 5.58.0 and earlier allows remote authenticated users to execute JavaScript in another user's browser. The Quick Add widget stores unneutralized first- or last-name input from a new contact and renders it as HTML in the dashboard's Recently Added view. Exploitation requires the access CiviCRM backend privilege and a second user to load that view, enabling script execution in that user's browser.

The record

CVE
CVE-2023-25440
Published
May 23, 2023
Updated
Jan 31, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007Command and Scripting Interpreter: JavaScript/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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