CVE-2021-24355: unknown simple 301 redirects by betterlinks Missing Authorization
Vulnerability summary
CVE-2021-24355 is a medium (CVSS 4.3) Missing Authorization vulnerability in unknown simple 301 redirects by betterlinks. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 52.9% 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
In the Simple 301 Redirects by BetterLinks WordPress plugin before 2.0.4, the lack of capability checks and insufficient nonce check on the AJAX actions, simple301redirects/admin/get_wildcard and simple301redirects/admin/wildcard, made it possible for authenticated users to retrieve and update the wildcard value for redirects.
CVSS metrics
3 scores · 2 sources · 2 versions- wordfenceSource4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
0.00 pp
From 0.72% 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/ce8f9648-30fb-4fb9-894e-879dc0f26f98X Refsource CONFIRMExploitThird Party Advisory