{"id":"CVE-2026-53704","aliases":["ALSA-2026:36674","CLSA-2026-1784107571","DEBIAN-CVE-2026-53704","EUVD-2026-36802","GHSA-j3jj-fwr8-4v9m","RHSA-2026:36673","RHSA-2026:36674","RHSA-2026:50688","RHSA-2026:50691","RLSA-2026:36674","UBUNTU-CVE-2026-53704","USN-8896-1"],"status":"published","title":"Gstreamer1-plugins-ugly-free: gstreamer: out-of-bounds read in realmedia demuxer fileinfo metadata parser","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00245,"percentile":0.15766,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2026-06-15T19:10:31Z","modified":"2026-11-06T10:04:47Z","fixes":[{"ecosystem":"Debian:14","package":"gst-plugins-ugly1.0","fixed_in":["1.28.4-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"gst-plugins-ugly1.0","fixed_in":["1.8.3-1ubuntu0.1+esm2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"gst-plugins-ugly1.0","fixed_in":["1.14.5-0ubuntu1~18.04.1+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"gst-plugins-ugly1.0","fixed_in":["1.16.2-2ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"gst-plugins-ugly1.0","fixed_in":["1.20.1-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:24.04:LTS","package":"gst-plugins-ugly1.0","fixed_in":["1.24.1-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:26.04:LTS","package":"gst-plugins-ugly1.0","fixed_in":["1.28.2-1ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"AlmaLinux:9","package":"gstreamer1-plugins-ugly-free","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.12-6.el9_8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"TuxCare:AlmaLinux:9.6","package":"gstreamer1-plugins-ugly-free","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.12-3.el9_6.tuxcare.els2"}]}],"bundled":2},{"source":"osv","ecosystem":"Debian:12","package":"gst-plugins-ugly1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22.0-2","1.22.0-2+deb12u1","1.22.0-2+deb12u2","1.22.1-1","1.22.10-1","1.22.3-1","1.22.3-2","1.22.4-1","1.22.5-1","1.22.6-1","1.22.7-1","1.22.8-1","1.22.9-1","1.23.1-1","1.23.2-1","1.23.90-1","1.24.0-1","1.24.1-1","1.24.10-1","1.24.11-1","1.24.12-1","1.24.2-1","1.24.3-1","1.24.4-1","1.24.5-1","1.24.6-1","1.24.7-1","1.24.8-1","1.24.9-1","1.25.1-1","1.25.50-1","1.25.50-2","1.25.90-1","1.25.90-2","1.26.0-1","1.26.1-1","1.26.10-1","1.26.2-1","1.26.3-1","1.26.3-2","1.26.3-3","1.26.3-4","1.26.4-1","1.26.5-1","1.26.5-2","1.26.6-1","1.26.7-1","1.26.8-1","1.26.9-1","1.27.1-1","1.27.2-1","1.27.50-1","1.27.50-2","1.27.90-1","1.28.0-1","1.28.1-1","1.28.2-1","1.28.3-1","1.28.4-1","1.28.5-1","1.28.6-1","1.28.7-1","1.28.8-1","1.29.1-1","1.29.2-1"]},{"source":"osv","ecosystem":"Debian:13","package":"gst-plugins-ugly1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.10-1","1.26.3-4","1.26.3-4+deb13u1","1.26.4-1","1.26.5-1","1.26.5-2","1.26.6-1","1.26.7-1","1.26.8-1","1.26.9-1","1.27.1-1","1.27.2-1","1.27.50-1","1.27.50-2","1.27.90-1","1.28.0-1","1.28.1-1","1.28.2-1","1.28.3-1","1.28.4-1","1.28.5-1","1.28.6-1","1.28.7-1","1.28.8-1","1.29.1-1","1.29.2-1"]},{"source":"osv","ecosystem":"Debian:14","package":"gst-plugins-ugly1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.4-1"}]}],"versions":["1.26.10-1","1.26.3-4","1.26.4-1","1.26.5-1","1.26.5-2","1.26.6-1","1.26.7-1","1.26.8-1","1.26.9-1","1.27.1-1","1.27.2-1","1.27.50-1","1.27.50-2","1.27.90-1","1.28.0-1","1.28.1-1","1.28.2-1","1.28.3-1"]},{"source":"osv","ecosystem":"Red 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support"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:36673","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:36674","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50688","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50691","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-53704","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487614","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53704","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j3jj-fwr8-4v9m"},{"url":"https://access.redhat.com/security/cve/CVE-2026-53703","tags":["report"]},{"url":"https://bugzilla.redhat.com/2487613","tags":["report"]},{"url":"https://bugzilla.redhat.com/2487614","tags":["report"]},{"url":"https://errata.almalinux.org/9/ALSA-2026-36674.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1784107571.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53703","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-53704","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487613","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_36673.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53703","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53704","tags":["advisory","report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_36674.json","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_50688.json","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_50691.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:36674","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-53704","tags":["report"]},{"url":"https://gstreamer.freedesktop.org/security/sa-2026-0042.html","tags":["report"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11825","tags":["report"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11826","tags":["report"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11831","tags":["report"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11832","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8896-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-38103","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-38104","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-2920","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-2922","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-19389","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-53703","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-53704","title":"Gstreamer1-plugins-ugly-free: gstreamer: out-of-bounds read in realmedia demuxer fileinfo metadata parser","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","status":"published","published":"2026-06-15T19:10:31.18Z","modified":"2026-11-05T21:43:22.962Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-05T22:55:20.139479Z"}],"euvd":[{"id":"EUVD-2026-36802","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","status":"published","published":"2026-06-15T19:10:31Z","modified":"2026-11-05T21:43:22Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T23:02:20.394374Z"}],"ghsa":[{"id":"GHSA-j3jj-fwr8-4v9m","title":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When...","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","status":"published","published":"2026-06-15T21:30:42Z","modified":"2026-09-09T00:30:26Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:11:36.851913Z"}],"nvd":[{"id":"CVE-2026-53704","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","status":"published","published":"2026-06-15T20:16:33.697Z","modified":"2026-11-05T22:18:47.85Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-05T23:57:19.370761Z"}],"osv":[{"id":"DEBIAN-CVE-2026-53704","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","status":"published","published":"2026-06-15T20:16:33.697Z","modified":"2026-11-06T10:04:47.902207426Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-06T10:38:22.758306Z"},{"id":"RHSA-2026:36673","title":"Red Hat Security Advisory: gstreamer1-plugins-ugly-free security update","status":"published","published":"2026-07-09T10:12:43Z","modified":"2026-09-09T10:42:40.782622626Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:19.963895Z"},{"id":"RHSA-2026:36674","title":"Red Hat Security Advisory: gstreamer1-plugins-ugly-free security update","status":"published","published":"2026-07-09T10:12:44Z","modified":"2026-09-09T10:13:39Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:19.963895Z"},{"id":"RHSA-2026:50688","title":"Red Hat Security Advisory: gstreamer1-plugins-ugly-free security update","status":"published","published":"2026-08-05T10:37:43Z","modified":"2026-09-09T10:16:45Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:20.984762Z"},{"id":"RHSA-2026:50691","title":"Red Hat Security Advisory: gstreamer1-plugins-ugly-free security update","status":"published","published":"2026-08-05T10:37:44Z","modified":"2026-09-09T10:16:45Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:20.984762Z"},{"id":"RLSA-2026:36674","title":"Moderate: gstreamer1-plugins-ugly-free security update","description":"GStreamer is a streaming media framework, based on graphs of elements which operate on media data.  This package contains plug-ins whose license is not fully compatible with LGPL.\n\nSecurity Fix(es):\n\n* gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer audio stream header parser (CVE-2026-53703)\n\n* gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer FILEINFO metadata parser (CVE-2026-53704)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-07-10T12:03:38.827258Z","modified":"2026-07-10T12:30:06.06649376Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:25.804165Z"},{"id":"UBUNTU-CVE-2026-53704","description":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.","status":"published","published":"2026-06-15T20:16:00Z","modified":"2026-10-08T19:48:25.279525847Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:41.382716Z"},{"id":"ALSA-2026:36674","title":"Moderate: gstreamer1-plugins-ugly-free security update","description":"GStreamer is a streaming media framework, based on graphs of elements which operate on media data. This package contains plug-ins whose license is not fully compatible with LGPL.  \n\nSecurity Fix(es):  \n\n  * gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer audio stream header parser (CVE-2026-53703)\n  * gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer FILEINFO metadata parser (CVE-2026-53704)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-07-08T00:00:00Z","modified":"2026-10-29T11:32:35.0799264Z","updated_at":"2026-11-02T15:27:54.283654Z"},{"id":"CLSA-2026-1784107571","title":"gstreamer1-plugins-ugly-free: Fix of 2 CVEs","description":"- CVE-2026-53703: fix rmdemux out-of-bounds read parsing MDPR audio header\n- CVE-2026-53704: fix rmdemux security issues in FILEINFO/pascal-string parsing","status":"published","published":"2026-07-15T09:26:24Z","modified":"2026-10-26T09:31:16.780133585Z","updated_at":"2026-11-02T15:43:46.151924Z"},{"id":"USN-8896-1","title":"gst-plugins-ugly1.0 vulnerabilities","description":"Michael Randrianantenaina discovered that GStreamer's Ugly Plugins\nincorrectly handled certain malformed RealMedia files. If a user were\ntricked into opening a crafted media file, an attacker could possibly use\nthis issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS,\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-38103,\nCVE-2023-38104)\n\nIt was discovered that GStreamer's Ugly Plugins incorrectly handled certain\nmalformed ASF and RealMedia files. If a user were tricked into opening a\ncrafted media file, an attacker could possibly use this issue to execute\narbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS and Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-2920,\nCVE-2026-2922)\n\nTianshuo Han discovered that GStreamer's Ugly Plugins incorrectly handled\ncertain malformed RealMedia files. If a user were tricked into opening a\ncrafted media file, an attacker could possibly use this issue to cause a\ndenial of service or expose sensitive information. (CVE-2026-53703,\nCVE-2026-53704)\n\nSeonwook Kim discovered that GStreamer's Ugly Plugins incorrectly handled\ncertain malformed ASF files. If a user were tricked into opening a crafted\nmedia file, an attacker could possibly use this issue to cause a denial of\nservice or expose sensitive information. (CVE-2026-19389)","status":"published","published":"2026-10-07T19:43:55Z","modified":"2026-10-08T19:58:54.749655728Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}