Deserialization in Beardev Joomsport

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

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-24384: held from 0.021 to 0.021.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

  • Beardev Joomsport
  • Joomsport – For Sports: Team & League, Football, Hockey More — versions 5.1.8

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-24384?
CVE-2021-24384 is a critical-severity vulnerability in Beardev Joomsport, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-07-06.
How severe is CVE-2021-24384?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-24384 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.