How severe is CVE-2021-24840?

CVE-2021-24840 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-24840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24840?

CVE-2021-24840 affects Codesupply Squaretype. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24840?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-24840 published?

CVE-2021-24840 was published on 2021-11-08 and last updated on 2026-06-17.

CVE-2021-24840

CVE-2021-24840 is a medium-severity vulnerability in Codesupply Squaretype with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Codesupply Squaretype
Published: 2021-11-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-24840?: 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.
How severe is CVE-2021-24840?: CVE-2021-24840 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-24840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24840?: CVE-2021-24840 affects Codesupply Squaretype. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24840?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24840 published?: CVE-2021-24840 was published on 2021-11-08 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:codesupply:squaretype:*:*:*:*:*:wordpress:*:*

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