HIGHCVSS v3.1 8.8Vulnerability
CVE-2026-13764
The Masterstudy - Education WordPress Theme theme for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.8.151. This is due to missing authorization and nonce validation on the `masterstudy_ms_stm_set_discard_transient` AJAX action. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to Administrator by setting the `stm_developer_access_token` transient and using the developer access auto-login flow to obtain administrator session cookies.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00506
- Cvss severity
- HIGH
- Cvss score
- 8.8
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 8.8
- Cvss version
- 3.1
- Cve id
- CVE-2026-13764
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-12T15:57:02+00:00
- Name
- CVE-2026-13764
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published at
- 2026-11-12T12:18:23.753
- Last modified
- 2026-11-12T18:17:45.153
- Epss percentile
- 0.43782
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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