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CVE-2026-40354VulnerabilityPublished Updated

SUSE · Security update for xdg-desktop-portal

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-40354· Low 2.9

Not known to be exploited · CVSS 2.9 Low : upgrade SUSE xdg-desktop-portal to 1.21.1 or 1.20.4 when convenient.

Data as of 6 Nov 2026, 14:02 UTC

CVSS 3.1 base score
2.9Low
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.21.1, 1.20.4
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade xdg-desktop-portal to 1.21.1 or 1.20.4.

Affected software

ProductAffectedFixed in
Flatpakxdg-desktop-portalAffected
  • >=1.21.0 <1.21.1
Fixed in
  • 1.21.1
Flatpakxdg-desktop-portalAffected
  • <1.20.4
Fixed in
  • 1.20.4
GitHubflatpak/xdg-desktop-portalpkg:github/flatpak/xdg-desktop-portalOther threatsAffected
  • =0
  • =1.21.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A security update has been released by the SUSE Product Security Team to fix these vulnerabilities. Users should apply this update promptly to remediate the issues. No additional mitigation steps are indicated in the advisory.

Description

A security update for xdg-desktop-portal addresses three vulnerabilities: a file deletion via symlink attack (CVE-2026-40354), arbitrary file access through path traversal in the SaveFiles files option (CVE-2026-55888), and drag-and-drop and copy-paste data theft due to a predictable FileTransfer key (CVE-2026-55889). These issues could allow unauthorized file manipulation and data theft.

References

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