UpHeron
All vulnerabilities

Servers and applications

CVE-2017-14251

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.

Severity
High 8.8
Published
11 Sept 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.3% in the next 30 daysHigher than 83% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Unrestricted file upload (CWE-434)
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Affected software

SoftwareAffected versions
TYPO3Servers and applications · cpe:a:typo3:typo3
  • Version 8.7.4
  • Version 8.7.3
  • Version 8.7.2
  • Version 8.7.1
All 42 release lines
  • Version 7.6.0
  • Version 7.6.1
  • Version 7.6.2
  • Version 7.6.3
  • Version 7.6.4
  • Version 7.6.5
  • Version 7.6.6
  • Version 7.6.7
  • Version 7.6.8
  • Version 7.6.9
  • Version 7.6.10
  • Version 7.6.11
  • Version 7.6.12
  • Version 7.6.13
  • Version 7.6.14
  • Version 7.6.15
  • Version 7.6.16
  • Version 7.6.17
  • Version 7.6.18
  • Version 7.6.19
  • Version 7.6.20
  • Version 7.6.21
  • Version 8.0.0
  • Version 8.0.1
  • Version 8.1.0
  • Version 8.1.1
  • Version 8.1.2
  • Version 8.2.0
  • Version 8.2.1
  • Version 8.3.0
  • Version 8.3.1
  • Version 8.4.0
  • Version 8.4.1
  • Version 8.5.0
  • Version 8.5.1
  • Version 8.6.0
  • Version 8.6.1
  • Version 8.7.0
  • Version 8.7.1
  • Version 8.7.2
  • Version 8.7.3
  • Version 8.7.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-14251
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-14251