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VulnerabilityPublished

CVE-2026-13764: The Masterstudy - Education WordPress Theme theme for WordPress is vulnerable to Privilege Escalation

Source GCVE Database

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Authoritative record:CVE-2026-13764· High 8.8

Not known to be exploited · CVSS 8.8 High.

Data as of 12 Nov 2026, 13:34 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Wordfence)CVSS 3.18.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Nov 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 12 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
StylemixThemesMasterstudy - Education WordPress ThemeAffected
  • <=4.8.151
Fixed in–

AI-suggested

Users should monitor the vendor's advisory for updates. Until a fix is available, restrict access to trusted users only and consider disabling or restricting the affected AJAX action if possible.

Description

The Masterstudy Education WordPress Theme contains a privilege escalation vulnerability in all versions up to and including 4.8.151. The flaw arises from missing authorization and nonce validation on a specific AJAX action, allowing authenticated users with Subscriber-level access or higher to escalate their privileges to Administrator by manipulating a transient and exploiting an auto-login flow.

References

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