{"cve":"CVE-2026-96280","nvd":{"published":"2026-09-27T21:17:04.200","modified":"2026-10-26T03:17:12.177","status":"Awaiting Analysis","description":"The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize (32 bits on 32-bit systems), causing undersized allocations while subsequent operations use the original 64-bit size, leading to heap buffer overflows. An attacker controlling an OCI registry can craft a delta stream that triggers this during flatpak install/update, potentially achieving code execution on 32-bit systems.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-197"],"references":["https://access.redhat.com/errata/RHSA-2026:80497","https://access.redhat.com/errata/RHSA-2026:80498","https://access.redhat.com/errata/RHSA-2026:80687","https://access.redhat.com/errata/RHSA-2026:89733","https://access.redhat.com/security/cve/CVE-2026-96280"],"products":[],"source":"nvd","synced_at":"2026-10-26T05:25:34.680713055+00:00"},"epss":{"cve":"CVE-2026-96280","score":0.0039,"percentile":0.32807,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}