CVE-2024-7398Network attack vector

Stored XSS via unescaped calendar event names

Published Sep 24, 2024 · Updated Jan 20, 2025

Stored XSS in Concrete CMS before 8.5.19 and 9.0.0 through 9.3.3 allows remote authenticated users to execute scripts via event names. The calendar event version dialog in concrete/views/dialogs/event/view_version.php renders getName() without h() output escaping. A user or group needs permission to create event calendars to store a payload, and modification permission is required to open the affected dialog and execute it.

CVSS severity4.6
Medium
EPSS probability0.49%
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 Concrete CMS before 8.5.19 and 9.0.0 through 9.3.3 allows remote authenticated users to execute scripts via event names. The calendar event version dialog in concrete/views/dialogs/event/view_version.php renders getName() without h() output escaping. A user or group needs permission to create event calendars to store a payload, and modification permission is required to open the affected dialog and execute it.

The record

CVE
CVE-2024-7398
Published
Sep 24, 2024
Updated
Jan 20, 2025
Vendor
Concrete CMS
Product
Concrete CMS
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 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=5.0.0 <8.5.19
  2. Affected versionversion=9.0.0 <9.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Concrete CMS · Concrete CMSversion=5.0.0 <8.5.19; version=9.0.0 <9.3.4

Published CVSS scores

4.6Concrete CMSCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

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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