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CVE-2019-15624

18
FAUCET Score

CVE-2019-15624 is an improper input validation vulnerability in Nextcloud Server 15.0.7, allowing group administrators to create user accounts with IDs matching system folder names. This medium-severity flaw (CVSS 4.9) has a high attack complexity for an authenticated attacker, potentially leading to unauthorized modification of system folders. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.0.11CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
>= 15.0.0, < 15.0.8CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
sle-15CPE matchmatch criteria
cpe:2.3:o:opensuse:backports:sle-15:sp1:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:o:suse:suse_linux_enterprise_server:12:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 78th percentile among its peer group of 3,565 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.opensuse.org / opensuse-security-announce/2020-02/msg00019.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-02/msg00022.html
Mailing ListThird Party Advisory
hackerone.com / reports/508493
ExploitThird Party Advisory
nextcloud.com / security/advisory
Vendor Advisory