Administrator code execution via unsafe PHP deserialization
Published Feb 3, 2026 · Updated Feb 3, 2026
PHP object injection in Blesta 3.0.0 through 5.13.2 allows remote authenticated users to execute arbitrary PHP code through the admin interface. The admin_clients.php and admin_company_groups.php controllers pass attacker-controlled POST parameters to unserialize() without sanitization. Administrator access is required; successful exploitation injects arbitrary PHP objects and executes code when a usable gadget chain is present.
Summary
What happened
PHP object injection in Blesta 3.0.0 through 5.13.2 allows remote authenticated users to execute arbitrary PHP code through the admin interface. The admin_clients.php and admin_company_groups.php controllers pass attacker-controlled POST parameters to unserialize() without sanitization. Administrator access is required; successful exploitation injects arbitrary PHP objects and executes code when a usable gadget chain is present.
The record
- CVE
- CVE-2026-25615
- Published
- Feb 3, 2026
- Updated
- Feb 3, 2026
- Vendor
- Phillips Data, Inc.
- Product
- Blesta
- Classifications
- CWE-502, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 3, 2026CVE publishedPublication date reported by the CVE source.
- Feb 3, 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=3.0.0 <5.13.3
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
- CVE-2026-25615 PHP proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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