Nextcloud Server before 11.0.3 is vulnerable to disclosure of valid share tokens for public calendars due to a logical error.

Published 9 y ago 2017-05-08 · modified 4 mo ago 2026-06-17 · JSON

CVSS

4.3

v3.1 · NVD

CISA KEV

not known exploited

EPSS

1.2%

percentile 68%

Public exploits

none known

Nextcloud Server before 11.0.3 is vulnerable to disclosure of valid share tokens for public calendars due to a logical error. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token.

Exploit prediction (EPSS)

1.17% probability of exploitation in the next 30 days, higher than 68% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.1	4.3	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`
NVD	2.0	4.3	`AV:N/AC:M/Au:N/C:P/I:N/A:N`

Affected products

Nextcloud Nextcloud Server

Classification

Weakness

CWE-285 Improper Authorization
CWE-863 Incorrect Authorization

References

nextcloud.com /security/advisory/?id=nc-sa-2017-011 · x_refsource_CONFIRM, x_transferred
hackerone.com /reports/218876 · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2017-0894
NVD: CVE-2017-0894

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