CVE-2021-24366Network attack vector

Stored XSS via unsanitized column labels

Published Jun 21, 2021 · Updated May 5, 2025

Stored XSS in Admin Columns before 4.3 and Admin Columns Pro before 5.5.1 allows remote authenticated users to run scripts through labels. The list-screen save path stores the title without filtering, while Label::set_label assigns label input directly for later unescaped rendering. Administrator access is required, including on multisite installations where unfiltered_html is disabled, and another user must view the affected admin content.

CVSS severity5.4
Medium
EPSS probability1.00%
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 Admin Columns before 4.3 and Admin Columns Pro before 5.5.1 allows remote authenticated users to run scripts through labels. The list-screen save path stores the title without filtering, while Label::set_label assigns label input directly for later unescaped rendering. Administrator access is required, including on multisite installations where unfiltered_html is disabled, and another user must view the affected admin content.

The record

CVE
CVE-2021-24366
Published
Jun 21, 2021
Updated
May 5, 2025
Vendor
CODEPRESS IT Solutions LLC
Product
Admin Columns
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 21, 2021CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=3.0 <4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

CODEPRESS IT Solutions LLC · Admin Columnsversion=3.0 <4.3
CODEPRESS IT Solutions LLC · Admin Columns Proversion=0 <5.5.1

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NVDAV:N/AC:M/Au:S/C:N/I:P/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Cross-Site Scripting (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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