How severe is CVE-2021-24384?

CVE-2021-24384 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24384?

CVE-2021-24384 affects Beardev Joomsport. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24384?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-24384 published?

CVE-2021-24384 was published on 2021-07-06 and last updated on 2026-06-17.

CVE-2021-24384

CVE-2021-24384 is a critical-severity vulnerability in Beardev Joomsport with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Beardev Joomsport
Published: 2021-07-06
Last modified: 2026-06-17

Description

The joomsport_md_load AJAX action of the JoomSport WordPress plugin before 5.1.8, registered for both unauthenticated and unauthenticated users, unserialised user input from the shattr POST parameter, leading to a PHP Object Injection issue. Even though the plugin does not have a suitable gadget chain to exploit this, other installed plugins could, which might lead to more severe issues such as RCE

Frequently asked questions

What is CVE-2021-24384?: The joomsport_md_load AJAX action of the JoomSport WordPress plugin before 5.1.8, registered for both unauthenticated and unauthenticated users, unserialised user input from the shattr POST parameter, leading to a PHP Object Injection issue. Even though the plugin does not have a suitable gadget chain to exploit this, other installed plugins could, which might lead to more severe issues such as RCE
How severe is CVE-2021-24384?: CVE-2021-24384 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24384?: CVE-2021-24384 affects Beardev Joomsport. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-24384 published?: CVE-2021-24384 was published on 2021-07-06 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/fb6c407c-713c-4e83-92ce-4e5f791be696

Affected products (1)

cpe:2.3:a:beardev:joomsport:*:*:*:*:*:wordpress:*:*

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