Administrator-session code execution via unescaped file parameter
Published Apr 19, 2024 · Updated Aug 2, 2024
Reflected XSS in CMSimple 5.15 allows remote attackers to execute browser scripts through a crafted link opened by an administrator. The printlink() function in cmsimple/functions.php appends the file parameter directly to a generated URL without HTML escaping, allowing injected markup to execute in the administrator's browser. Exploitation requires an administrator to follow the link; the published proof of concept exposes the session cookie, enabling authenticated template modification and server-side code execution.
Summary
What happened
Reflected XSS in CMSimple 5.15 allows remote attackers to execute browser scripts through a crafted link opened by an administrator. The printlink() function in cmsimple/functions.php appends the file parameter directly to a generated URL without HTML escaping, allowing injected markup to execute in the administrator's browser. Exploitation requires an administrator to follow the link; the published proof of concept exposes the session cookie, enabling authenticated template modification and server-side code execution.
The record
- CVE
- CVE-2024-32392
- Published
- Apr 19, 2024
- Updated
- Aug 2, 2024
- Vendor
- CMSimple
- Product
- CMSimple
- Classifications
- CWE-79, T1204.001
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Apr 19, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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=5.15
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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
- CMSimple 5.15 reflected XSS proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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