Stored cross-site scripting via missing AJAX nonce
Published Jul 7, 2021 · Updated Oct 15, 2024
Cross-site request forgery in WPManageNinja Fluent Forms before 3.6.67 allows remote attackers to store JavaScript via administrative AJAX. The Acl::verify access-control method checks user capabilities but accepts state-changing AJAX requests without validating a nonce. Exploitation requires social engineering a site administrator or another user with full form permissions; the stored script can create an administrator account or alter plugin or theme files when an administrator views the form.
Summary
What happened
Cross-site request forgery in WPManageNinja Fluent Forms before 3.6.67 allows remote attackers to store JavaScript via administrative AJAX. The Acl::verify access-control method checks user capabilities but accepts state-changing AJAX requests without validating a nonce. Exploitation requires social engineering a site administrator or another user with full form permissions; the stored script can create an administrator account or alter plugin or theme files when an administrator views the form.
The record
- CVE
- CVE-2021-34620
- Published
- Jul 7, 2021
- Updated
- Oct 15, 2024
- Vendor
- WPManageNinja
- Product
- Fluent Forms
- Classifications
- CWE-352, CWE-79, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 7, 2021CVE publishedPublication date reported by the CVE source.
- Oct 15, 2024Record 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=0 <3.6.67
- Affected versionversion=3.6.67 <3.6.67
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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