How severe is CVE-2026-39436?

CVE-2026-39436 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2026-39436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-39436?

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-2026-39436 have an EU (EUVD) identifier?

Yes. CVE-2026-39436 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31766.

When was CVE-2026-39436 published?

CVE-2026-39436 was published on 2026-05-25 and last updated on 2026-06-17.

CVE-2026-39436

CVE-2026-39436 is a high-severity vulnerability with a CVSS 3.x base score of 7.1. 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-352.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31766
Weakness: CWE-352
Published: 2026-05-25
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) vulnerability in bgermann CformsII allows Cross Site Request Forgery. This issue affects CformsII: from n/a through 15.1.3.

Frequently asked questions

What is CVE-2026-39436?: Cross-Site Request Forgery (CSRF) vulnerability in bgermann CformsII allows Cross Site Request Forgery. This issue affects CformsII: from n/a through 15.1.3.
How severe is CVE-2026-39436?: CVE-2026-39436 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2026-39436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-39436?: 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-2026-39436 have an EU (EUVD) identifier?: Yes. CVE-2026-39436 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31766.
When was CVE-2026-39436 published?: CVE-2026-39436 was published on 2026-05-25 and last updated on 2026-06-17.

References

https://patchstack.com/database/wordpress/plugin/cforms2/vulnerability/wordpress-cformsii-plugin-15-1-3-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

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