How severe is CVE-2026-4986?

CVE-2026-4986 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-4986 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4986?

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

Does CVE-2026-4986 have an EU (EUVD) identifier?

Yes. CVE-2026-4986 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35351.

When was CVE-2026-4986 published?

CVE-2026-4986 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2026-4986

CVE-2026-4986 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35351
Weakness: CWE-862
Published: 2026-06-09
Last modified: 2026-06-17

Description

The WPForms WordPress plugin before 1.10.0.5 does not verify the authenticity of incoming PayPal webhook events before processing them, allowing unauthenticated attackers to forge webhook payloads and manipulate the payment state of arbitrary transactions.

Frequently asked questions

What is CVE-2026-4986?: The WPForms WordPress plugin before 1.10.0.5 does not verify the authenticity of incoming PayPal webhook events before processing them, allowing unauthenticated attackers to forge webhook payloads and manipulate the payment state of arbitrary transactions.
How severe is CVE-2026-4986?: CVE-2026-4986 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-4986 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4986?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4986 have an EU (EUVD) identifier?: Yes. CVE-2026-4986 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35351.
When was CVE-2026-4986 published?: CVE-2026-4986 was published on 2026-06-09 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/1d99eed6-9a16-4d5a-90f9-ab604dfd5b92/

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