CVE-2026-110777

A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH property automatically read the targeted local file, base64-encode its contents and upload it back to the server when the event is saved. There are no file path restrictions or checks to verify whether the attachment originally came from the server or was added locally. This allows an attacker with access to a shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with malicious calendar events.

CVSS v3 5.7 MEDIUM

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.1 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-110777
https://bugzilla.redhat.com/show_bug.cgi?id=2552693
https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/672

Configurations

No configuration.

History

14 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 18:17

Updated : 2026-10-15 16:17

NVD link : CVE-2026-110777

Mitre link : CVE-2026-110777

CVE.ORG link : CVE-2026-110777

JSON object : View

Products Affected

No product.

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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