CVE-2026-5056

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{"bugzilla": {"description": "gstreamer: GStreamer: Arbitrary code execution via stack-based buffer overflow in qtdemux", "id": "2508623", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2508623"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-121", "details": ["A stack-based buffer overflow in GStreamer's qtdemux component allows attackers to execute arbitrary code via specially crafted input. This occurs due to insufficient data length validation when parsing UncompressedFrameConfigBox structures."], "mitigation": {"lang": "en:us", "value": "Do not open, preview, or auto-index untrusted MOV/MP4 files with GStreamer-based apps; leave RHEL memory protections and SELinux enabled"}, "name": "CVE-2026-5056", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "gstreamer", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "gstreamer", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "mingw-gstreamer1", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "gstreamer1", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-29T19:10:33Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-5056\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-5056\nhttp://www.openwall.com/lists/oss-security/2026/05/01/1\nhttps://gitlab.freedesktop.org/api/v4/projects/gstreamer%2Fgstreamer/repository/files/security-advisories%2Fsa-2026-0016.md/raw?ref=main\nhttps://www.zerodayinitiative.com/advisories/ZDI-26-283/"], "statement": "An Important security flaw in GStreamer's QuickTime parser could allow an attacker to execute malicious code if a user opens a specially crafted media file. Because the vulnerable code was introduced in GStreamer 1.26.0, Red Hat Enterprise Linux (RHEL) versions 9 and older do not contain this code and are not affected by this vulnerability.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "a303670510771b993867ddf62bff3bce0cb988c3"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "GStreamer", "source": "cna", "vendor": "GStreamer"}, "product": "gstreamer", "vendor": "gstreamer"}], "created": "2026-07-29T20:45:06.306964+00:00", "updated": "2026-08-04T12:30:09.195953+00:00", "vendors": ["gstreamer", "gstreamer$PRODUCT$gstreamer"]}