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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 14 Oct 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Evolution-data-server: local file disclosure via attach file:// uris | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| Weaknesses | CWE-200 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-10-14T18:51:08.491Z
Reserved: 2026-10-14T17:38:34.755Z
Link: CVE-2026-110777
No data.
Status : Received
Published: 2026-10-14T18:17:36.490
Modified: 2026-10-14T18:17:36.490
Link: CVE-2026-110777
No data.
OpenCVE Enrichment
No data.
Weaknesses