CVE-2026-110777
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
51/100
Published: 2026-10-14
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Network
Low Complexity
Conf. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
Required
S:
Unchanged
C:
High
I:
None
A:
None
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| GNOME | evolution-data-server | 3.26 < 3.62.1 |
References & Advisories (3)
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT