CVE-2023-44765Public exploitNetwork attack vector

Stored XSS via unvalidated plural handles

Published Oct 6, 2023 · Updated Aug 2, 2024

Stored XSS in Data Object associations in Concrete CMS 8.5.12 and earlier and 9.0 through 9.2.1 allows remote authenticated users to run scripts. The dashboard entity controller stored the plural_handle request value without applying handle validation, allowing association pages to render attacker-supplied JavaScript. Administrator access is required to create or edit a Data Object, and execution occurs when another user opens the affected page.

CVSS severity5.4
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

Stored XSS in Data Object associations in Concrete CMS 8.5.12 and earlier and 9.0 through 9.2.1 allows remote authenticated users to run scripts. The dashboard entity controller stored the plural_handle request value without applying handle validation, allowing association pages to render attacker-supplied JavaScript. Administrator access is required to create or edit a Data Object, and execution occurs when another user opens the affected page.

The record

CVE
CVE-2023-44765
Published
Oct 6, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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

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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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