CVE-2021-24354: unknown simple 301 redirects by betterlinks Missing Authorization
Vulnerability summary
CVE-2021-24354 is a high (CVSS 8.8) Missing Authorization vulnerability in unknown simple 301 redirects by betterlinks. EPSS estimates a 1.48% chance of exploitation in the next 30 days, higher than 73.4% of scored vulnerabilities. 2 public exploits are recorded. Fixed in 2.0.4.
Timeline
- 14-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A lack of capability checks and insufficient nonce check on the AJAX action in the Simple 301 Redirects by BetterLinks WordPress plugin before 2.0.4, made it possible for authenticated users to install arbitrary plugins on vulnerable sites.
CVSS metrics
3 scores · 2 sources · 2 versions- wordfenceSource8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.48%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
0.00 pp
From 1.48% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (wordfence.com)
Maturity: unknown
Exploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Unknown1 product
- simple 301 redirects by betterlinks≥ 2.0.0, < 2.0.0* | ≥ 2.0.4, < 2.0.4
Wordpress1 product
- simple-301-redirects≥ 2.0.0, ≤ 2.0.3 (fixed in 2.0.4)
Wpdeveloper1 product
- simple_301_redirects≥ 2.0.0, < 2.0.4
3 vendors · 3 products
References
3 links- wpscan.com/vulnerability/8638b36c-6641-491f-b9df-5db3645e4668X Refsource CONFIRMExploitThird Party Advisory