Reflected XSS via unsanitized AJAX parameter
Published Apr 12, 2021 · Updated Aug 3, 2024
Cross-site scripting in Patreon WordPress before 1.7.2 allows remote authenticated users to execute script via a crafted AJAX request. The patreon_save_attachment_patreon_level action copies the patreon_attachment_patreon_level request parameter into the image-lock form without sanitization or output escaping, reflecting attacker-controlled markup in the administrator page. An attacker must induce a logged-in WordPress administrator to submit the request; script execution then runs with that administrator’s browser privileges and can alter accessible site data.
Summary
What happened
Cross-site scripting in Patreon WordPress before 1.7.2 allows remote authenticated users to execute script via a crafted AJAX request. The patreon_save_attachment_patreon_level action copies the patreon_attachment_patreon_level request parameter into the image-lock form without sanitization or output escaping, reflecting attacker-controlled markup in the administrator page. An attacker must induce a logged-in WordPress administrator to submit the request; script execution then runs with that administrator’s browser privileges and can alter accessible site data.
The record
- CVE
- CVE-2021-24229
- Published
- Apr 12, 2021
- Updated
- Aug 3, 2024
- Vendor
- Patreon
- Product
- Patreon WordPress
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 12, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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=1.7.2 <1.7.2
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.
Public exploit references
No public exploit references are available in this record.
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