What is CVE-2019-12739?

CVE-2019-12739 is a critical-severity vulnerability in Nextcloud Extract, classified under OS Command Injection. CVSS score: 9.0/10. Published 2019-06-05.

How severe is CVE-2019-12739?

Critical severity. CVSS v3 base score is 9.0 out of 10.

RCE in Nextcloud Extract

CVE-2019-12739

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).

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.026 (83.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

Affected products

Nextcloud Extract
N/a — versions n/a

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC)

Frequently asked questions

What is CVE-2019-12739?: CVE-2019-12739 is a critical-severity vulnerability in Nextcloud Extract, classified under OS Command Injection. CVSS score: 9.0/10. Published 2019-06-05.
How severe is CVE-2019-12739?: Critical severity. CVSS v3 base score is 9.0 out of 10.