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CVE-2026-103962VulnerabilityPublished

The User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend

Source GCVE Database

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Authoritative record:CVE-2026-103962· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium.

Data as of 31 Oct 2026, 10:50 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Wordfence)CVSS 3.16.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
wedevsUser Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post SubmissionAffected
  • <=4.3.13
Fixed in–

AI-suggested

Until a fix is available, users should consider disabling or restricting use of the affected plugin or applying web application firewall rules to block malicious input targeting the 'field_attr[required]' parameter.

Description

The User Frontend WordPress plugin up to version 4.3.13 is vulnerable to reflected cross-site scripting (XSS) via the 'field_attr[required]' parameter. This vulnerability arises from insufficient input sanitization and output escaping, allowing unauthenticated attackers to inject arbitrary scripts. The nonce check intended to protect the AJAX action is ineffective because the nonce value is publicly accessible to anonymous visitors, enabling attackers to harvest it and bypass protections.

References

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