Stored XSS via unsanitized SVG file uploads
Published Oct 10, 2024 · Updated Apr 8, 2026
Stored cross-site scripting in Advanced Blocks Pro 1.0.0 and earlier allows remote authenticated users to run scripts via SVG uploads. The SVG upload path accepts script-bearing SVG content without sufficient sanitization and later serves the file without escaping its executable markup. Author-level access or higher is required to upload the payload, which executes when a user accesses the SVG file.
Summary
What happened
Stored cross-site scripting in Advanced Blocks Pro 1.0.0 and earlier allows remote authenticated users to run scripts via SVG uploads. The SVG upload path accepts script-bearing SVG content without sufficient sanitization and later serves the file without escaping its executable markup. Author-level access or higher is required to upload the payload, which executes when a user accesses the SVG file.
The record
- CVE
- CVE-2024-9074
- Published
- Oct 10, 2024
- Updated
- Apr 8, 2026
- Vendor
- Essa Mamdani
- Product
- Advanced Blocks Pro
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 10, 2024CVE publishedPublication date reported by the CVE source.
- Apr 8, 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?
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- Affected versionversion=0 <=1.0.0
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
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Your stack
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Your stack
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