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CVE-2021-24354

28
FAUCET Score

CVE-2021-24354 is a critical vulnerability affecting the Simple 301 Redirects by BetterLinks WordPress plugin prior to version 2.0.4. This flaw, stemming from insufficient capability and nonce checks, allows authenticated users to install arbitrary plugins on vulnerable websites. With a CVSS score of 8.8 (High), it presents a significant risk, enabling remote attackers to achieve high impact on confidentiality, integrity, and availability with low attack complexity. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the potential for severe compromise remains.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.0.4CPE matchmatch criteria
cpe:2.3:a:wpdeveloper:simple_301_redirects:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 69th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

wpscan.com / vulnerability/8638b36c-6641-491f-b9df-5db3645e4668
ExploitThird Party Advisory
wordfence.com / blog/2021/05/severe-vulnerabilities-patched-in-simple-301-redirects-by-betterlinks-plugin
ExploitThird Party Advisory