How severe is CVE-2026-39540?

CVE-2026-39540 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-39540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-39540?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-39540 have an EU (EUVD) identifier?

Yes. CVE-2026-39540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36964.

When was CVE-2026-39540 published?

CVE-2026-39540 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-39540

CVE-2026-39540 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36964
Weakness: CWE-79
Published: 2026-06-15
Last modified: 2026-06-17

Description

Subscriber Cross Site Scripting (XSS) in Shipment Tracker for Woocommerce <= 1.5.3.2 versions.

Frequently asked questions

What is CVE-2026-39540?: Subscriber Cross Site Scripting (XSS) in Shipment Tracker for Woocommerce <= 1.5.3.2 versions.
How severe is CVE-2026-39540?: CVE-2026-39540 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-39540 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-39540?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-39540 have an EU (EUVD) identifier?: Yes. CVE-2026-39540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36964.
When was CVE-2026-39540 published?: CVE-2026-39540 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://patchstack.com/database/wordpress/plugin/shipment-tracker-for-woocommerce/vulnerability/wordpress-shipment-tracker-for-woocommerce-plugin-1-5-3-2-cross-site-scripting-xss-vulnerability?_s_id=cve

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