CVE-2017-14251

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-09-11 · updated 2026-06-17
Weakness: CWE-434

Description

Unrestricted File Upload vulnerability in the fileDenyPattern in sysext/core/Classes/Core/SystemEnvironmentBuilder.php in TYPO3 7.6.0 to 7.6.21 and 8.0.0 to 8.7.4 allows remote authenticated users to upload files with a .pht extension and consequently execute arbitrary PHP code.

Affected products

typo3: 7.6.0, 7.6.1, 7.6.2, 7.6.3, 7.6.4, 7.6.5 (+36)

References

http://blog.emaze.net/2017/12/typo3-unrestricted-file-upload-remote.html
http://www.securityfocus.com/bid/100620
http://www.securitytracker.com/id/1039295
https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007/
http://blog.emaze.net/2017/12/typo3-unrestricted-file-upload-remote.html
http://www.securityfocus.com/bid/100620
http://www.securitytracker.com/id/1039295
https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007/

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