What is CVE-2026-56053?

CVE-2026-56053 is a high-severity vulnerability in Eventprime, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-06-25.

How severe is CVE-2026-56053?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Eventprime

CVE-2026-56053

Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Eventprime — versions n/a

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-56053?: CVE-2026-56053 is a high-severity vulnerability in Eventprime, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-06-25.
How severe is CVE-2026-56053?: High severity. CVSS v3 base score is 8.8 out of 10.