CVE-2026-3601

MEDIUMNVD 4.34.3—

4.3

The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the embed_form_action() function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.

CVSS v3: 4.3
EG Score: 4.3(high)
EPSS: 10.8%
KEV: Not listed

Published

May 5, 2026

Last Modified

May 5, 2026

References (6)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-862Missing Authorization

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 14:30 UTCEG score recompute
2026-05-20 14:30 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-3601?

CVE-2026-3601 is a medium vulnerability published on May 5, 2026. The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the embedformaction() function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level…

When was CVE-2026-3601 disclosed?

CVE-2026-3601 was first published in the National Vulnerability Database on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-3601 actively exploited?

CVE-2026-3601 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-3601?

CVE-2026-3601 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2026-3601?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3601, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-3601

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-3601?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)