Auth bypass in Wpdeveloper Simple 301 Redirects
CVE-2021-24356
In the Simple 301 Redirects by BetterLinks WordPress plugin before 2.0.4, a lack of capability checks and insufficient nonce check on the AJAX action, simple301redirects/admin/activate_plugin, made it possible for authenticated users to activate arbitrary plugins installed on vulnerable sites.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (84.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Wpdeveloper Simple 301 Redirects
- Simple 301 Redirects By Betterlinks — versions 2.0.0, 2.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/blog/2021/05/severe-vulnerabilities-patched-in-simple-301-red… (Exploit, Third Party Advisory)
- wpscan.com/vulnerability/be356530-5e00-4f27-8177-b80f3c1ae6e8 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24356?
- CVE-2021-24356 is a high-severity vulnerability in Wpdeveloper Simple 301 Redirects, classified under Missing Authorization. CVSS score: 8.8/10. Published 2021-06-14.
- How severe is CVE-2021-24356?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24356 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.