CVE record · CVE-2026-96280

Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems

CVSS 7.5 HighEPSS 0.0059 · 48th percentile

Published by the CVE Program (CNA: redhat) at 27 Sept 2026, 20:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10 Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.16.0-9.el10_2.4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.16.0-5.el10_0.6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.12.9-7.el8_10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.12.9-4.el9_8.4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.12.7-5.el9_2.5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.12.9-3.el9_4.5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1.12.9-4.el9_6.5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Package name: flatpak https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2026-96280
CNA: redhat
Weakness (CWE): CWE-197
Tags: Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Red Hat Enterprise Linux 9.6 Extended Update Support
Red Hat Enterprise Linux 7
CWE-197
Published: 27 Sept 2026
Updated: 2 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0059, the 48th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

27 Sept 2026, 20:19 UTC Confirmed by the CVE List
27 Sept 2026, 21:17 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:80497 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:80498 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:80687 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:89733 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:90364 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:92221 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:92369 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2026-96280 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2539419 issue-trackingredhat
github.com/flatpak/flatpak/security/advisories/GHSA-jr92-2v97-wgvc

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.