How severe is CVE-2026-56053?

CVE-2026-56053 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-56053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-56053?

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

Does CVE-2026-56053 have an EU (EUVD) identifier?

Yes. CVE-2026-56053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39382.

When was CVE-2026-56053 published?

CVE-2026-56053 was published on 2026-06-25 and last updated on 2026-06-26.

CVE-2026-56053

CVE-2026-56053 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39382
Weakness: CWE-502
Published: 2026-06-25
Last modified: 2026-06-26

Description

Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.

Frequently asked questions

What is CVE-2026-56053?: Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.
How severe is CVE-2026-56053?: CVE-2026-56053 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-56053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-56053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-56053 have an EU (EUVD) identifier?: Yes. CVE-2026-56053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39382.
When was CVE-2026-56053 published?: CVE-2026-56053 was published on 2026-06-25 and last updated on 2026-06-26.

References

https://patchstack.com/database/wordpress/plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-3-4-1-php-object-injection-vulnerability?_s_id=cve

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