Author-level stored XSS via unsanitized SVG uploads
Published Mar 18, 2024 · Updated Aug 28, 2024
Stored XSS in Sterling Hamilton Scalable Vector Graphics (SVG) 3.4 and earlier allows remote authenticated users to inject scripts via SVG uploads. The plugin accepts uploaded SVG markup without sanitizing embedded script elements, and WordPress serves the retained file so its payload executes when opened. Author-level access is sufficient to upload the file, but another user must access its direct URL; the demonstrated effect is script execution in that viewer’s browser.
Summary
What happened
Stored XSS in Sterling Hamilton Scalable Vector Graphics (SVG) 3.4 and earlier allows remote authenticated users to inject scripts via SVG uploads. The plugin accepts uploaded SVG markup without sanitizing embedded script elements, and WordPress serves the retained file so its payload executes when opened. Author-level access is sufficient to upload the file, but another user must access its direct URL; the demonstrated effect is script execution in that viewer’s browser.
The record
- CVE
- CVE-2023-7085
- Published
- Mar 18, 2024
- Updated
- Aug 28, 2024
- Vendor
- Sterling Hamilton
- Product
- Scalable Vector Graphics (SVG)
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 18, 2024CVE publishedPublication date reported by the CVE source.
- Aug 28, 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 <=3.4
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.
Weakness, pattern, technique
Public exploit references
- WPScan malicious SVG proof of conceptproof of concept · validated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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