CVE-2024-37887

Nextcloud Server's events information leaked with shared calendars on recurrence exceptions

LOW
3.5
CVSS Score
Published: June 14, 2024 at 03:48 PM UTC
Updated: June 17, 2026 at 07:38 AM UTC
1 product affected across 1 vendorNextcloud/server

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Severity
LOW3.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Nextcloud Server is a self hosted personal cloud system. Private shared calendar events' recurrence exceptions can be read by sharees. It is recommended that the Nextcloud Server is upgraded to 27.1.10 or 28.0.6 or 29.0.1 and that the Nextcloud Enterprise Server is upgraded to 27.1.10 or 28.0.6 or 29.0.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

27.0.0 ≤ v < 27.1.1028.0.0 ≤ v ≤ 28.0.628.0.0 ≤ v < 28.0.629.0.0
Affected range stops below 27.1.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 28.0.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.5LOWGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-284NVD-CWE-noinfo

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