Administrator account creation via client-supplied registration role
Published Sep 27, 2021 · Updated Apr 28, 2026
Privilege escalation in StylemixThemes uListing 2.0.5 and earlier allows remote attackers to create administrator accounts during registration. The unauthenticated stm_listing_register AJAX action accepts the client-supplied role field and assigns its administrator value to the new account. Exploitation requires WordPress user registration to be enabled and grants complete administrative control of the site.
Summary
What happened
Privilege escalation in StylemixThemes uListing 2.0.5 and earlier allows remote attackers to create administrator accounts during registration. The unauthenticated stm_listing_register AJAX action accepts the client-supplied role field and assigns its administrator value to the new account. Exploitation requires WordPress user registration to be enabled and grants complete administrative control of the site.
The record
- CVE
- CVE-2021-36879
- Published
- Sep 27, 2021
- Updated
- Apr 28, 2026
- Vendor
- StylemixThemes
- Product
- uListing
- Classifications
- CWE-264, T1136.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 27, 2021CVE publishedPublication date reported by the CVE source.
- Apr 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=<= 2.0.5 <=2.0.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- WPScan stm_listing_register proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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