CVE-2021-24366 json
Admin Columns Free < 4.3 & Pro < 5.5.1 - Admin+ Stored XSS in Label
published 5y ago modified 4mo ago also EUVD-2021-11279
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
The Admin Columns WordPress plugin before 4.3 and Admin Columns Pro WordPress plugin before 5.5.1 do not sanitise and escape its Label settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
Patch / fix
- Unknown Admin Columns 4.3
- Unknown Admin Columns Pro 5.5.1
Is CVE-2021-24366 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
1.00% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/05427156-4d5c-4aeb-add8-1c574fda5c28 referenced PoC, tagged "exploit" by a source, unverified
- whitesourcesoftware.com https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-24366 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- Unknown Admin Columns
- Unknown Admin Columns Pro
Classification
- Technology feeds
References
-
github.com
/codepress/admin-columns/commit/b45571ed21d574d13687213a5002e0c68e4442c7
patch
-
wpscan.com
/vulnerability/05427156-4d5c-4aeb-add8-1c574fda5c28
exploit, vdb-entry, technical-description, third-party-advisory
-
whitesourcesoftware.com
/vulnerability-database/CVE-2021-24366
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24366
- NVD CVE-2021-24366
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.