CVE-2021-24657 json
Limit Login Attempts < 4.0.50 - Unauthenticated Stored Cross-Site Scripting
published 2021-09-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11569
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
The Limit Login Attempts WordPress plugin before 4.0.50 does not escape the IP addresses (which can be controlled by attacker via headers such as X-Forwarded-For) of attempted logins before outputting them in the reports table, leading to an Unauthenticated Stored Cross-Site Scripting issue.
Patch / fix
- limit_login_attempts_project limit_login_attempts 4.0.50
Exploit prediction
1.58% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Limit Login Attempts WordPress - Stored Cross-site Scripting nuclei detection template
- wpscan.com https://wpscan.com/vulnerability/c789ca04-d88c-4789-8be1-812888f0c8f8 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Unknown Limit Login Attempts
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/c789ca04-d88c-4789-8be1-812888f0c8f8
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24657
- NVD CVE-2021-24657
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