CVE-2019-12739
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows...
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).
- Record
CVE-2019-12739- CVSS 3.0
- 9.0 Critical
CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:R - Updated
- 2026-11-02
EUVDEUVD-2019-4328
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).
- Record
EUVD-2019-4328- CVSS 3.0
- 9.0 Critical
CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:R - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vpwh-6v3v-q9vw No score
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows...
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).
- Record
GHSA-vpwh-6v3v-q9vw- Updated
- 2026-11-02
NVD
lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).
- Record
CVE-2019-12739- CVSS 3.0
- 9.0 Critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-12739 is a critical vulnerability (CVSS 9.0) in Nextcloud Extract, published June 5, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.51%, the 84th percentile. No source names a fixed version.