Code execution via unrestricted stored PHP deserialization
Published Jun 9, 2026 · Updated Jun 9, 2026
PHP object injection in TYPO3 CMS affected releases allows local users with storage write access to execute code through crafted stored payloads. VariableFrontend called unserialize() on cache values without authenticating them, while Registry deserialized sys_registry values without blocking gadget classes. Exploitation requires direct write access to the cache store, database, or file system; a usable gadget chain grants code execution in the CMS process.
Summary
What happened
PHP object injection in TYPO3 CMS affected releases allows local users with storage write access to execute code through crafted stored payloads. VariableFrontend called unserialize() on cache values without authenticating them, while Registry deserialized sys_registry values without blocking gadget classes. Exploitation requires direct write access to the cache store, database, or file system; a usable gadget chain grants code execution in the CMS process.
The record
- CVE
- CVE-2026-49740
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- in2code GmbH
- Product
- TYPO3 CMS
- Classifications
- CWE-502
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 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=0 <10.4.57
- Affected versionversion=11.0.0 <11.5.51
- Affected versionversion=12.0.0 <12.4.46
- Affected versionversion=13.0.0 <13.4.31
- Affected versionversion=14.0.0 <14.3.3
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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