How severe is CVE-2026-4058?

CVE-2026-4058 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-4058 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4058?

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

Does CVE-2026-4058 have an EU (EUVD) identifier?

Yes. CVE-2026-4058 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35388.

When was CVE-2026-4058 published?

CVE-2026-4058 was published on 2026-06-09 and last updated on 2026-06-17.

CVE-2026-4058

CVE-2026-4058 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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 4.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35388
Weakness: CWE-862
Published: 2026-06-09
Last modified: 2026-06-17

Description

The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the user_subscription_cancel() function in all versions up to, and including, 4.3.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to cancel any user's subscription pack, including administrators.

Frequently asked questions

What is CVE-2026-4058?: The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the user_subscription_cancel() function in all versions up to, and including, 4.3.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to cancel any user's subscription pack, including administrators.
How severe is CVE-2026-4058?: CVE-2026-4058 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-4058 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4058?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4058 have an EU (EUVD) identifier?: Yes. CVE-2026-4058 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35388.
When was CVE-2026-4058 published?: CVE-2026-4058 was published on 2026-06-09 and last updated on 2026-06-17.

References

Other CWE-862 (Missing Authorization) vulnerabilities

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CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

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