---
id: CVE-2026-2604
title: A flaw was found in evolution-data-server
summary: >-
  A flaw was found in evolution-data-server. Inconsistent comparison logic in
  the addressbook file backend allows a Flatpak application with D-Bus access to
  craft a malicious URI containing directory traversal sequences. This URI is
  stored…
severity: medium
cvss: 5.6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L'
cwe:
  - CWE-73
vendor: GNOME
product: Evolution Data Server
affected:
  - evolution_data_server < 3.59.3
  - evolution-data-server (all versions)
  - evolution-data-server (all versions)
  - evolution-data-server (all versions)
  - evolution-data-server (all versions)
  - evolution-data-server (all versions)
published: '2026-06-17'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:16:53.790'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2604'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-2604'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2440301'
    label: secalert@redhat.com
  - url: 'https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/627'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2026/03/msg00007.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2026/09/msg00031.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://gitlab.gnome.org/GNOME/evolution-data-server/-/work_items/627'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-17T12:46:36.218759Z'
epss: 0.00304
epssPercentile: 0.20671
ingestedAt: '2026-09-25T23:21:16.951Z'
---

## Overview

A flaw was found in evolution-data-server. Inconsistent comparison logic in the addressbook file backend allows a Flatpak application with D-Bus access to craft a malicious URI containing directory traversal sequences. This URI is stored without proper validation during contact creation or modification. Later, during contact deletion, the URI is processed with a less strict check, leading to the deletion of arbitrary files on the host filesystem. This could potentially include critical Flatpak override files.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.