CVE-2019-15613: nextcloud nextcloud_server Improper Input Validation
CVSS: 8.0v3.1HighModified
AliasesMGASA-2020-0099
Published 04-02-2020Last modified 05-08-2024
Vulnerability summary
CVE-2019-15613 is a high (CVSS 8.0) Improper Input Validation vulnerability in nextcloud nextcloud_server. EPSS estimates a 1.13% chance of exploitation in the next 30 days, higher than 66% of scored vulnerabilities.
CVSS score
8.0/10
010
High · v3.1 (NVD)EPSS score
1.13%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 04-02-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A bug in Nextcloud Server 17.0.1 causes the workflow rules to depend their behaviour on the file extension when checking file mimetypes.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 8.0Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HSourcesSingle source
Medium 6.0Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.13%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
0.00 pp
From 1.13% on 21-09-2026
21-09-202621-10-2026
EPSS score1.13%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-345Insufficient Verification of Data AuthenticityThe product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
Affected systems
Mageia1 product
- nextcloud< 15.0.14-1.mga7
Nextcloud1 product
- nextcloud_server< 15.0.14 | ≥ 16.0.0, < 16.0.7 | ≥ 17.0.0, < 17.0.2
Opensuse1 product
- backportssle-15:sp1
3 vendors · 3 products
References
7 links- nextcloud.com/security/advisory/?id=NC-SA-2020-002X Refsource MISCBroken LinkVendor AdvisoryAdvisory
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory