CVE-2021-24840: Squaretype Modern Blog < 3.0.4 - Unauthenticated Private/Schedule Posts Disclosure

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-08 · updated 2026-06-17
Weakness: CWE-639

Description

The Squaretype WordPress theme before 3.0.4 allows unauthenticated users to manipulate the query_vars used to retrieve the posts to display in one of its REST endpoint, without any validation. As a result, private and scheduled posts could be retrieved via a crafted request.

Affected products

Squaretype: before 3.0.4 — fixed in 3.0.4

How to fix

Upgrade to a fixed version: Squaretype 3.0.4. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/971302fd-4e8b-4c6a-818f-3a42c7fb83ef
https://wpscan.com/vulnerability/971302fd-4e8b-4c6a-818f-3a42c7fb83ef

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