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CVE-2019-15610

16
FAUCET Score

CVE-2019-15610 describes an improper authorization vulnerability in version 0.17.7 of the Nextcloud Circles app, allowing users to retain access to a circle even after their email address has been removed. This medium-severity vulnerability (CVSS 4.3) has a low attack complexity and requires low privileges, potentially leading to a loss of confidentiality. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.16.11CPE matchmatch criteria
cpe:2.3:a:nextcloud:circles:*:*:*:*:*:*:*:*
>= 0.16.12, < 0.17.8CPE matchmatch criteria
cpe:2.3:a:nextcloud:circles:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.83%
Probability of exploitation in next 30 days
EPSS Percentile
53.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0083 is in the 65th percentile among its peer group of 21,951 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

hackerone.com / reports/673724
Permissions RequiredThird Party Advisory
nextcloud.com / security/advisory
Vendor Advisory