CVE-2026-40354

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.4% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-26.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-11 00:29Z6 MO AGO

Last updated

2026-04-15 15:14Z6 MO AGO

Reserved

2026-04-11

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Low (CVSS 2.9)

CNA CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

• CWE-61UNIX Symbolic Link (Symlink) FollowingCompound
• CWE-59Improper Link Resolution Before File Access ('Link Following')Base

Data version

5.2

Document digest

2efceaec221328070bd2aa354f4e5d1ae387ea5b86064f105a236b2af458527c

• github.comhttps://github.com/flatpak/xdg-desktop-portal/releases/tag/1.21.1
• github.comhttps://github.com/flatpak/xdg-desktop-portal/releases/tag/1.20.4
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2026/04/10/14
• github.comhttps://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-rqr9-jwwf-wxgj