Authenticated code execution via autotask code injection
Published May 10, 2026 · Updated May 10, 2026
Code injection in the autotasks interface in ImpressCMS 1.4.2 allows remote authenticated users to execute arbitrary PHP code. The administrative handler writes the unvalidated sat_code value into an executable PHP file that subsequently accepts commands through GET parameters. A valid account with access to the autotasks administration action is required, and successful exploitation runs commands with the web application's privileges.
Summary
What happened
Code injection in the autotasks interface in ImpressCMS 1.4.2 allows remote authenticated users to execute arbitrary PHP code. The administrative handler writes the unvalidated sat_code value into an executable PHP file that subsequently accepts commands through GET parameters. A valid account with access to the autotasks administration action is required, and successful exploitation runs commands with the web application's privileges.
The record
- CVE
- CVE-2021-47938
- Published
- May 10, 2026
- Updated
- May 10, 2026
- Vendor
- ImpressCMS
- Product
- ImpressCMS
- Classifications
- CWE-94, T1505.003
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 10, 2026CVE publishedPublication date reported by the CVE source.
- May 10, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.4.2
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
- Exploit-DB 50298 ImpressCMS authenticated RCE proof of conceptproof of concept · unverified
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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