A missing check in the Nextcloud Server prior to version 15.0.1 causes leaking of calendar event names when adding or modifying confidentia…

published 2019-07-30 7y ago modified 2026-06-17 4mo ago also EUVD-2019-15033

cvss: 4.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

A missing check in the Nextcloud Server prior to version 15.0.1 causes leaking of calendar event names when adding or modifying confidential or private events.

Patch / fix

fixed in 1

nextcloud nextcloud_server 15.0.1

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Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

n/a Nextcloud Server

Classification

Weakness

CWE-287 Improper Authentication
CWE-862 Missing Authorization

References

hackerone.com /reports/476615
third-party-advisory

Sources

CVE List CVE-2019-5449
NVD CVE-2019-5449

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