CVE catalog

CVE-2026-110777

Severity: Medium · CVSS 5.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Published: Oct 8, 2026, 12:00:00 AM UTC
Updated: Oct 14, 2026, 7:17:13 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.37% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	evolution-data-server	sid	`3.56.2-9`	vulnerable
Debian	evolution-data-server	forky	`3.56.2-9`	vulnerable
Debian	evolution-data-server	trixie	`3.56.2-0+deb13u1`	vulnerable
Debian	evolution-data-server	bookworm	`3.46.4-2`	vulnerable
Debian	evolution-data-server	bookworm-security	`3.46.4-2+deb12u1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	evolution-data-server	source	sid	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	evolution-data-server	source	forky	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	evolution-data-server	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	evolution-data-server	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[evolution-data-server]Affected
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[evolution-data-server-common]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · all · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · all · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[evolution-data-server-dev]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[evolution-data-server-doc]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · all · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · all · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[evolution-data-server-tests]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-camel-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-ebackend-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-ebook-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-ebookcontacts-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-ecal-2.0]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-edatabook-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-edatacal-2.0]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-edataserver-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-edataserverui-1.2]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[gir1.2-edataserverui4-1.0]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[libcamel-1.2-64]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[libcamel1.2-dev]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[libebackend-1.2-11]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[libebackend1.2-dev]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
[libebook-1.2-21]Affected
Source package: [evolution-data-server]
Details (2)
- 3.46.4-2 · amd64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm
- 3.46.4-2 · arm64 · bookworm
  Affected
  nvd · evolution-data-server · debian · bookworm

Next results

Observed: Oct 23, 2026, 7:38:04 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]