CVE-2021-24841 json
Helpful < 4.4.59 - Admin+ Stored Cross-Site Scripting
published 2021-11-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11753
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
The Helpful WordPress plugin before 4.4.59 does not sanitise and escape some of its settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed
Patch / fix
- helpful_project helpful 4.4.59
Exploit prediction
0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/55d11acf-8c47-40da-be47-24f74fd7566e referenced PoC, tagged "exploit" by a source, unverified
- mikadmin.fr https://mikadmin.fr/tech/XSS-Stored-Helpful-5b10bc7f40ab319f9797eb4abad4f420660.pdf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/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 Helpful
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/55d11acf-8c47-40da-be47-24f74fd7566e
exploit, third-party-advisory
-
mikadmin.fr
/tech/XSS-Stored-Helpful-5b10bc7f40ab319f9797eb4abad4f420660.pdf
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24841
- NVD CVE-2021-24841
Fencer Vulns 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.