CVE-2026-121629

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When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. 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Run GStreamer-based applications with minimal filesystem access using Linux namespaces or containers, restricting the process to only the directories it legitimately requires. Where feasible, use network controls to limit which manifest hosts the application may contact. These measures reduce risk but do not remove the vulnerability."}], "timeline": [{"lang": "en", "time": "2026-10-30T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-11-09T11:01:54.279Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-12T05:29:17.336Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux:10.3"], "defaultStatus": "affected", "packageName": "gstreamer1-plugins-good", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.26.7-10.el10_3.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.2"], "defaultStatus": "affected", "packageName": "gstreamer1-plugins-good", "product": "Red Hat Enterprise Linux 10.2 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.26.7-2.el10_2.9", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "unaffected", "packageName": "gstreamer-plugins-good", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "unaffected", "packageName": "gstreamer1-plugins-good", "product": "Red Hat Enterprise Linux 7", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "unaffected", "packageName": "gstreamer-plugins-good", "product": "Red Hat Enterprise Linux 7", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "unaffected", "packageName": "gstreamer1-plugins-good", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "unaffected", "packageName": "gstreamer1-plugins-good", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable."}], "id": "CVE-2026-121629", "lastModified": "2026-11-12T06:17:12.657", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Secondary"}]}, "published": "2026-11-09T12:16:37.847", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:98644"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:99140"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-121629"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2565965"}, {"source": "secalert@redhat.com", "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5380"}, {"source": "secalert@redhat.com", "url": "https://gstreamer.freedesktop.org/security/sa-2026-0097.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-73"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"bugzilla": {"description": "gst-plugins-good: gst-plugins-good: Local file disclosure via unvalidated file:// URIs in adaptivedemux2 manifest handling", "id": "2565965", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2565965"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-73", "details": ["A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable."], "mitigation": {"lang": "en:us", "value": "Avoid opening HLS, DASH, or MSS manifests from untrusted network sources. Run GStreamer-based applications with minimal filesystem access using Linux namespaces or containers, restricting the process to only the directories it legitimately requires. Where feasible, use network controls to limit which manifest hosts the application may contact. These measures reduce risk but do not remove the vulnerability."}, "name": "CVE-2026-121629", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "gstreamer1-plugins-good", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:rhel_els:6", "fix_state": "Not affected", "package_name": "gstreamer-plugins-good", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:rhel_els:7", "fix_state": "Not affected", "package_name": "gstreamer1-plugins-good", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:rhel_els:7", "fix_state": "Not affected", "package_name": "gstreamer-plugins-good", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "gstreamer1-plugins-good", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "gstreamer1-plugins-good", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-11-09T11:01:54Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-121629\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-121629\nhttps://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5380\nhttps://gstreamer.freedesktop.org/security/sa-2026-0097.html"], "statement": "This vulnerability is rated Important because a remote party who can supply or influence an adaptive streaming manifest can cause GStreamer to read local files available to the process, with high confidentiality impact where pipeline output is stored or forwarded.\nSupported RHEL 10.2 and later streams and RHIVOS 2.1 ship gstreamer1-plugins-good 1.26.x or newer, which includes the file:// read path introduced in upstream 1.26.0, and are affected. Fedora 43 ships 1.26.x and is affected. Fedora 44 and Rawhide ship 1.28.8, which remains below the upstream fix version 1.28.9, and are affected.\nSupported RHEL 9 and earlier RHEL streams ship gstreamer1-plugins-good versions below 1.26.0. Those builds use a download path that cannot open file:// segment URLs from manifest content, so they are not affected by this issue.", "threat_severity": "Important"}

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