CVE-2021-24353 json
Simple 301 Redirects by BetterLinks - 2.0.0 – 2.0.3 - Unauthenticated Redirect Import
published 2021-06-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11266
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
The import_data function of the Simple 301 Redirects by BetterLinks WordPress plugin before 2.0.4 had no capability or nonce checks making it possible for unauthenticated users to import a set of site redirects.
Patch / fix
- wpdeveloper simple_301_redirects 2.0.4
Exploit prediction
1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wordfence.com https://www.wordfence.com/blog/2021/05/severe-vulnerabilities-patched-in-simple-301-redirects-by-betterlinks-plugin/ referenced PoC, tagged "exploit" by a source, unverified
- wpscan.com https://wpscan.com/vulnerability/74c23d56-e81f-47e9-bf8b-33d3f0e81894 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Unknown Simple 301 Redirects by BetterLinks
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
-
wordfence.com
/blog/2021/05/severe-vulnerabilities-patched-in-simple-301-redirects-by-betterlinks-plugin/
exploit, third-party-advisory
-
wpscan.com
/vulnerability/74c23d56-e81f-47e9-bf8b-33d3f0e81894
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24353
- NVD CVE-2021-24353
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.