Flatpak: flatpak: flatpak-system-helper cross-user cancelpull orphans another user's ongoing pull

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-96283
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-27 22:17:06 UTC
Updated2026-09-29 21:29:07 UTC
DescriptionBy calling org.freedesktop.Flatpak.SystemHelper.CancelPull on another user's pull, the pull is not actually cancelled but removed from internal tracking, making it impossible for the owning user to stop it. Ongoing pulls cannot be stopped.

Risk And Classification

Primary CVSS: v3.1 3.3 LOW from [email protected]

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

EPSS: 0.001490000 probability, percentile 0.034720000 (date 2026-09-29)

Problem Types: CWE-862 | CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNACVSS3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 10 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified

References

ReferenceSourceLinkTags
github.com/flatpak/flatpak/security/advisories/GHSA-89xm-3m96-w3jg [email protected] github.com
access.redhat.com/security/cve/CVE-2026-96283 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Upstream acknowledges Asim Viladi Oglu Manizada as the original reporter. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-07T00:00:00.000ZReported to Red Hat.
CNA2026-04-07T00:00:00.000ZMade public.

Workarounds

CNA: No known mitigation other than updating.

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