CVE-2019-15623

Q: How do I fix CVE-2019-15623?

Upgrade nextcloud server to 16.0.2 or later.

Q: Is CVE-2019-15623 being actively exploited?

Not that we know of. CVE-2019-15623 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 78% of all scored CVEs.

Q: How severe is CVE-2019-15623?

CVE-2019-15623 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2019-15623 affect?

Published advisories record a fix for nextcloud server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUMEPSS 78th pctl

5.3

CVSS v3

NVD

Description

Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled.

CWE-359

How to fix

Remediation Available

nextcloud serverNVD

Affected:>= 16.0.0, < 16.0.2Fixed in:16.0.2CVE-2019-15623derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.92%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Exploit1

hackerone.com

Vendor Advisory1

nextcloud.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-359 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-50719	High	7.5	84%	-	Fix
CVE-2022-0482	Critical	9.1	44%	-	Fix
CVE-2023-36052	High	8.6	22%	-	Fix
CVE-2021-22876	Medium	5.3	5.3%	-	Fix
CVE-2024-45591	Medium	5.3	3.4%	-	Fix
CVE-2022-24819	Medium	5.3	3.3%	-	Fix

Common questions

How do I fix CVE-2019-15623?

Upgrade nextcloud server to 16.0.2 or later.

Is CVE-2019-15623 being actively exploited?

Not that we know of. CVE-2019-15623 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 78% of all scored CVEs.

How severe is CVE-2019-15623?

CVE-2019-15623 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2019-15623 affect?

Published advisories record a fix for nextcloud server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.