Dangerous file upload via incomplete path sanitization
Published Dec 24, 2022 · Updated Apr 10, 2025
Unrestricted file upload in Microweber before 1.3.2 allows remote authenticated users with high privileges to store dangerous files. The plupload.php handler normalized an attacker-controlled path and removed only '..'; the fix routes that path through sanitize_path(), which also strips slash-dot variants and shell metacharacters. The network request requires high-privilege authentication, and impact is limited to resources accessible to the server-side PHP process.
Summary
What happened
Unrestricted file upload in Microweber before 1.3.2 allows remote authenticated users with high privileges to store dangerous files. The plupload.php handler normalized an attacker-controlled path and removed only '..'; the fix routes that path through sanitize_path(), which also strips slash-dot variants and shell metacharacters. The network request requires high-privilege authentication, and impact is limited to resources accessible to the server-side PHP process.
The record
- CVE
- CVE-2022-4732
- Published
- Dec 24, 2022
- Updated
- Apr 10, 2025
- Vendor
- Microweber
- Product
- Microweber
- Classifications
- CWE-434, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Dec 24, 2022CVE publishedPublication date reported by the CVE source.
- Apr 10, 2025Record 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=unspecified <1.3.2
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.
Weakness, pattern, technique
Public exploit references
- huntr proof of concept for CVE-2022-4732proof of concept · unverified
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Technologies
Your stack
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Your stack
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