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CVE-2021-24562

22
FAUCET Score

CVE-2021-24562 is an Insecure Direct Object Reference (IDOR) vulnerability affecting the LifterLMS plugin for WordPress versions prior to 4.21.2. This flaw allowed students to view other students' answers and grades within the learning management system. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low complexity, potentially leading to unauthorized disclosure of sensitive student data. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.21.2CPE matchmatch criteria
cpe:2.3:a:lifterlms:lifterlms:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 56th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

make.lifterlms.com / 2021/05/17/lifterlms-version-4-21-2
Release NotesVendor Advisory
wpscan.com / vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00
ExploitThird Party Advisory