CVE-2019-12739: nextcloud extract OS Command Injection
CVSS: 9.0v3.0CriticalModified
Published 05-06-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-12739 is a critical (CVSS 9.0) OS Command Injection vulnerability in nextcloud extract. EPSS estimates a 2.51% chance of exploitation in the next 30 days, higher than 84.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.0/10
010
Critical · v3.0 (CVE.org)EPSS score
2.51%
0%100%
Low · -0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 0 · Duplicates 1Timeline
- 05-06-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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).
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.0Preferred score · CVE.org (CNA)
CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:RSources2 sources · 8.8–9.0
- NVDNIST8.8HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
Medium 6.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.51%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
-0.05 pp
From 2.56% on 19-09-2026
19-09-202619-10-2026
EPSS score2.51%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (hackerone.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Nextcloud1 product
- extract< 1.2.0
1 vendor · 1 product
References
2 links- www.secsignal.org/news/a-tale-of-rce-nextcloud-extract-app/X Refsource MISC