CVE-2017-14251 json
TYPO3 Arbitrary Code Execution
published 2017-09-11 9 y ago modified 2026-06-17 4 mo ago also GHSA-fh4q-hxrw-cjqq , EUVD-2022-3781
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist typo3/cms 7.6.22, 8.7.5
Exploit prediction
2.31% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- typo3.org https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | typo3/cms | >=7.6.0, <7.6.22 >=8.0.0, <8.7.5 |
7.6.22 8.7.5 |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
typo3.org
/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007/
exploit, vendor-advisory
-
securityfocus.com
/bid/100620
vdb-entry, web, third-party-advisory
-
securitytracker.com
/id/1039295
vdb-entry, web, third-party-advisory
-
blog.emaze.net
/2017/12/typo3-unrestricted-file-upload-remote.html
web
-
nvd.nist.gov
/vuln/detail/CVE-2017-14251
advisory
-
github.com
/TYPO3/typo3
package
-
typo3.org
/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007
web
Sources
- CVE List CVE-2017-14251
- GitHub Advisory GHSA-fh4q-hxrw-cjqq
- NVD CVE-2017-14251
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