Arbitrary username changes via missing nonce validation
Published Aug 8, 2022 · Updated Aug 27, 2025
CSRF in Yogesh Pant Easy Username Updater before 1.0.5 allows remote attackers to change any WordPress user's username. The eup_user_update function accepts a forged POST request without validating a WordPress nonce before applying the supplied user_login value. Exploitation requires an authenticated administrator to submit attacker-controlled content, and the resulting request can rename any account, including an administrator account.
Summary
What happened
CSRF in Yogesh Pant Easy Username Updater before 1.0.5 allows remote attackers to change any WordPress user's username. The eup_user_update function accepts a forged POST request without validating a WordPress nonce before applying the supplied user_login value. Exploitation requires an authenticated administrator to submit attacker-controlled content, and the resulting request can rename any account, including an administrator account.
The record
- CVE
- CVE-2022-2355
- Published
- Aug 8, 2022
- Updated
- Aug 27, 2025
- Vendor
- Yogesh Pant
- Product
- Easy Username Updater
- Classifications
- CWE-352, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 8, 2022CVE publishedPublication date reported by the CVE source.
- Aug 27, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.5 <1.0.5
What conditions does exploitation require?
What is affected?
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 forged username-change formproof of concept · validated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo