How severe is CVE-2026-56027?

CVE-2026-56027 has a CVSS 3.x base score of 9.9, rated critical 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-2026-56027 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-56027?

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-2026-56027 published?

CVE-2026-56027 was published on 2026-06-26.

CVE-2026-56027

CVE-2026-56027 is a critical-severity vulnerability with a CVSS 3.x base score of 9.9. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Published: 2026-06-26
Last modified: 2026-06-26

Description

Customer Arbitrary File Upload in Booster for WooCommerce <= 8.0.1 versions.

Frequently asked questions

What is CVE-2026-56027?: Customer Arbitrary File Upload in Booster for WooCommerce <= 8.0.1 versions.
How severe is CVE-2026-56027?: CVE-2026-56027 has a CVSS 3.x base score of 9.9, rated critical 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-2026-56027 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-56027?: 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-2026-56027 published?: CVE-2026-56027 was published on 2026-06-26.

References

https://patchstack.com/database/wordpress/plugin/woocommerce-jetpack/vulnerability/wordpress-booster-for-woocommerce-plugin-8-0-1-arbitrary-file-upload-vulnerability?_s_id=cve

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