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        "cveId": "CVE-2026-12891",
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "state": "PUBLISHED",
        "assignerShortName": "redhat",
        "dateReserved": "2026-06-22T11:31:30.239Z",
        "datePublished": "2026-06-23T19:53:21.692Z",
        "dateUpdated": "2026-06-24T13:08:21.927Z"
    },
    "containers": {
        "cna": {
            "title": "Gstreamer1-plugins-bad: gstreamer1-plugins-bad: global buffer overflow (oob read) in h.266/vvc vui parameter parser",
            "metrics": [
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                    "other": {
                        "content": {
                            "value": "Moderate",
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                        "type": "Red Hat severity rating"
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                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
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            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space."
                }
            ],
            "affected": [
                {
                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 10",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "gstreamer1-plugins-bad-free",
                    "defaultStatus": "affected",
                    "cpes": [
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                },
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 8",
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                    "packageName": "gstreamer1-plugins-bad-free",
                    "defaultStatus": "affected",
                    "cpes": [
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                },
                {
                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "gstreamer1-plugins-bad-free",
                    "defaultStatus": "affected",
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            ],
            "references": [
                {
                    "url": "https://access.redhat.com/security/cve/CVE-2026-12891",
                    "tags": [
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                    ]
                },
                {
                    "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2491318",
                    "name": "RHBZ#2491318",
                    "tags": [
                        "issue-tracking",
                        "x_refsource_REDHAT"
                    ]
                },
                {
                    "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5109"
                }
            ],
            "datePublic": "2026-06-23T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "description": "Out-of-bounds Read",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "x_redhatCweChain": "CWE-125: Out-of-bounds Read",
            "workarounds": [
                {
                    "lang": "en",
                    "value": "No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability."
                }
            ],
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-06-04T00:00:00.000Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-06-23T00:00:00.000Z",
                    "value": "Made public."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Red Hat would like to thank Dr. Faruk Kazi (CoE-CNDS Lab, VJTI, Mumbai, India) and Ramesh Adhikari (CoE-CNDS Lab, VJTI, Mumbai, India) for reporting this issue."
                }
            ],
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