CVE-2023-49337Network attack vector

Stored script execution via unescaped site name

Published Dec 25, 2023 · Updated Aug 26, 2024

Stored XSS in Concrete CMS 9.0.0 through 9.2.2 allows remote authenticated users to inject script through the dashboard site-name field. The application stores the site name submitted at /dashboard/system/basics/name and renders getSiteName() values in multiple pages without HTML escaping. Administrator privileges are required to plant the value, and another user's browser must render it; the vendor rates the resulting impact as integrity only.

CVSS severity2.4
Low
EPSS probability0.55%
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 9.0.0 through 9.2.2 allows remote authenticated users to inject script through the dashboard site-name field. The application stores the site name submitted at /dashboard/system/basics/name and renders getSiteName() values in multiple pages without HTML escaping. Administrator privileges are required to plant the value, and another user's browser must render it; the vendor rates the resulting impact as integrity only.

The record

CVE
CVE-2023-49337
Published
Dec 25, 2023
Updated
Aug 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2024Record 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
2.4MITRECVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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