Authenticated script execution via unescaped AJAX attributes
Published Dec 6, 2021 · Updated Aug 3, 2024
Reflected XSS in WP Google Fonts before 3.1.5 allows remote authenticated users to execute script through the googlefont_action AJAX endpoint. The action writes googlefont_ajax_name and googlefont_ajax_family directly into HTML attributes without context-appropriate escaping. Exploitation requires a crafted POST and victim interaction with the reflected controls; the injected script then runs in the victim's WordPress origin.
Summary
What happened
Reflected XSS in WP Google Fonts before 3.1.5 allows remote authenticated users to execute script through the googlefont_action AJAX endpoint. The action writes googlefont_ajax_name and googlefont_ajax_family directly into HTML attributes without context-appropriate escaping. Exploitation requires a crafted POST and victim interaction with the reflected controls; the injected script then runs in the victim's WordPress origin.
The record
- CVE
- CVE-2021-24935
- Published
- Dec 6, 2021
- Updated
- Aug 3, 2024
- Vendor
- Noah Kagan
- Product
- WP Google Fonts
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 6, 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.1.5 <3.1.5
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 crafted POST proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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