HighFix available
gst-plugins-ugly1.0 — security advisory
A vulnerability was found in the GStreamer RealMedia demuxer (gst-plugins-ugly). When processing a RealMedia (.rm) file, the demuxer parses MDPR (media properties) chunks to configure audio streams. For audio stream header versions 4 and 5, the parser reads fields such as codec type, packet size, sample rate, channel count, and extra codec data length from fixed offsets within the chunk without first checking that the chunk contains enough data. If a malicious file provides an MDPR chunk that is too small to contain a complete audio stream header, the parser reads beyond the end of the buffer. This can cause the application to crash. In some cases, bytes read past the buffer boundary may be incorporated into stream metadata, which could result in limited information disclosure.
- Products
- gst-plugins-ugly1.0
- Affected versions
- 1.12.3-1, 1.12.3-1build1, 1.12.4-1, 1.12.4-1build1, 1.13.1-1, 1.13.91-1, 1.14.0-1, 1.14.1-1~ubuntu18.04.1, 1.14.4-1~ubuntu18.04.1, 1.14.5-0ubuntu1~18.04.1, 1.16.1-1, 1.16.1-1build1, 1.16.2-1, 1.16.2-2, 1.16.2-2build1, 1.18.5-1, 1.20.0-1, 1.20.0-1build1, 1.20.1-1, 1.22.10-1, 1.22.5-1, 1.22.6-1, 1.22.7-1, 1.22.8-1, 1.24.1-1, 1.24.1-1build1, 1.26.0-1, 1.26.1-1, 1.26.2-1, 1.26.3-1, 1.26.3-3, 1.26.3-4, 1.26.4-1, 1.26.5-1, 1.26.6-1, 1.26.7-1build1, 1.27.2-1, 1.27.90-1, 1.28.0-1, 1.28.1-1, 1.28.2-1, 1.6.0-1ubuntu1, 1.6.1-1ubuntu1, 1.6.2-1ubuntu1, 1.7.1-1ubuntu1, 1.7.2-1ubuntu1, 1.7.90-1ubuntu1, 1.7.91-1ubuntu1, 1.8.0-1ubuntu1, 1.8.1-1ubuntu0.1, 1.8.2-1ubuntu0.1, 1.8.3-1ubuntu0.1, 1.8.3-1ubuntu0.1+esm1
- Fixed versions
- 1.14.5-0ubuntu1~18.04.1+esm1, 1.16.2-2ubuntu0.1~esm1, 1.20.1-1ubuntu0.1~esm1, 1.24.1-1ubuntu0.1~esm1, 1.28.2-1ubuntu0.1~esm1, 1.8.3-1ubuntu0.1+esm2
- CVEs
- CVE-2026-53703
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 10:04 UTC · Revision 1
Source evidence
A vulnerability was found in the GStreamer RealMedia demuxer (gst-plugins-ugly). When processing a RealMedia (.rm) file, the demuxer parses MDPR (media properties) chunks to configure audio streams. For audio stream header versions 4 and 5, the parser reads fields such as codec type, packet size, sample rate, channel count, and extra codec data length from fixed offsets within the chunk without first checking that the chunk contains enough data. If a malicious file provides an MDPR chunk that is too small to contain a complete audio stream header, the parser reads beyond the end of the buffer. This can cause the application to crash. In some cases, bytes read past the buffer boundary may be incorporated into stream metadata, which could result in limited information disclosure.
osv:UBUNTU-CVE-2026-53703
gst-plugins-ugly1.0
Fixed versions: 1.8.3-1ubuntu0.1+esm2
gst-plugins-ugly1.0
Fixed versions: 1.14.5-0ubuntu1~18.04.1+esm1
gst-plugins-ugly1.0
Fixed versions: 1.16.2-2ubuntu0.1~esm1
gst-plugins-ugly1.0
Fixed versions: 1.20.1-1ubuntu0.1~esm1
gst-plugins-ugly1.0
Fixed versions: 1.24.1-1ubuntu0.1~esm1
gst-plugins-ugly1.0
Fixed versions: Not specified
gst-plugins-ugly1.0
Fixed versions: 1.28.2-1ubuntu0.1~esm1
Complete source record
{
"id": "7b0823d4d48624f8c1e3722fae7e9ebfaae191c8542a5acac57407057d8f28c7",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-53703",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-53703",
"summary": "A vulnerability was found in the GStreamer RealMedia demuxer (gst-plugins-ugly). When processing a RealMedia (.rm) file, the demuxer parses MDPR (media properties) chunks to configure audio streams. For audio stream header versions 4 and 5, the parser reads fields such as codec type, packet size, sample rate, channel count, and extra codec data length from fixed offsets within the chunk without first checking that the chunk contains enough data. If a malicious file provides an MDPR chunk that is too small to contain a complete audio stream header, the parser reads beyond the end of the buffer. This can cause the application to crash. In some cases, bytes read past the buffer boundary may be incorporated into stream metadata, which could result in limited information disclosure.",
"evidence": "osv:UBUNTU-CVE-2026-53703",
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{
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{
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{
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{
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{
"value": "1.8.1-1ubuntu0.1",
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{
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{
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{
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{
"value": "1.12.3-1build1",
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{
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{
"value": "1.12.4-1build1",
"evidence": "/affected/1/versions"
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{
"value": "1.13.1-1",
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{
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{
"value": "1.14.1-1~ubuntu18.04.1",
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{
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{
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},
{
"name": {
"value": "gst-plugins-ugly1.0",
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{
"value": "1.16.2-2ubuntu0.1~esm1",
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"affected_versions": [
{
"value": "1.16.1-1",
"evidence": "/affected/2/versions"
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{
"value": "1.16.1-1build1",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.2-2build1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "gst-plugins-ugly1.0",
"evidence": "/affected/3/package/name"
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{
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],
"affected_versions": [
{
"value": "1.18.5-1",
"evidence": "/affected/3/versions"
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{
"value": "1.20.0-1",
"evidence": "/affected/3/versions"
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{
"value": "1.20.0-1build1",
"evidence": "/affected/3/versions"
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{
"value": "1.20.1-1",
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},
{
"name": {
"value": "gst-plugins-ugly1.0",
"evidence": "/affected/4/package/name"
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{
"value": "1.24.1-1ubuntu0.1~esm1",
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"affected_versions": [
{
"value": "1.22.5-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.22.6-1",
"evidence": "/affected/4/versions"
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{
"value": "1.22.7-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.22.8-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.22.10-1",
"evidence": "/affected/4/versions"
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{
"value": "1.24.1-1",
"evidence": "/affected/4/versions"
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{
"value": "1.24.1-1build1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "gst-plugins-ugly1.0",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.26.0-1",
"evidence": "/affected/5/versions"
},
{
"value": "1.26.1-1",
"evidence": "/affected/5/versions"
},
{
"value": "1.26.2-1",
"evidence": "/affected/5/versions"
},
{
"value": "1.26.3-1",
"evidence": "/affected/5/versions"
},
{
"value": "1.26.3-3",
"evidence": "/affected/5/versions"
},
{
"value": "1.26.3-4",
"evidence": "/affected/5/versions"
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{
"value": "1.26.4-1",
"evidence": "/affected/5/versions"
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{
"value": "1.26.5-1",
"evidence": "/affected/5/versions"
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{
"value": "1.26.6-1",
"evidence": "/affected/5/versions"
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},
{
"name": {
"value": "gst-plugins-ugly1.0",
"evidence": "/affected/6/package/name"
},
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{
"value": "1.28.2-1ubuntu0.1~esm1",
"evidence": "/affected/6/ranges"
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],
"affected_versions": [
{
"value": "1.26.6-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.26.7-1build1",
"evidence": "/affected/6/versions"
},
{
"value": "1.27.2-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.27.90-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.28.0-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.28.1-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.28.2-1",
"evidence": "/affected/6/versions"
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}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-53703",
"aliases": [
"UBUNTU-CVE-2026-53703"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
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"events": [
{
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{
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}
],
"package": {
"name": "gst-plugins-ugly1.0",
"purl": "pkg:deb/ubuntu/gst-plugins-ugly1.0?arch=source&distro=esm-apps-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
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"1.6.0-1ubuntu1",
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"1.7.2-1ubuntu1",
"1.7.90-1ubuntu1",
"1.7.91-1ubuntu1",
"1.8.0-1ubuntu1",
"1.8.1-1ubuntu0.1",
"1.8.2-1ubuntu0.1",
"1.8.3-1ubuntu0.1",
"1.8.3-1ubuntu0.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53703.json"
},
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{
"binary_name": "gstreamer1.0-plugins-ugly-amr",
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],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
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},
{
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},
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"1.12.3-1",
"1.12.3-1build1",
"1.12.4-1",
"1.12.4-1build1",
"1.13.1-1",
"1.13.91-1",
"1.14.0-1",
"1.14.1-1~ubuntu18.04.1",
"1.14.4-1~ubuntu18.04.1",
"1.14.5-0ubuntu1~18.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53703.json"
},
"ecosystem_specific": {
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{
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}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
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{
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{
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]
}
],
"package": {
"name": "gst-plugins-ugly1.0",
"purl": "pkg:deb/ubuntu/gst-plugins-ugly1.0?arch=source&distro=esm-apps%2Ffocal",
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"1.16.1-1",
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"1.16.2-1",
"1.16.2-2",
"1.16.2-2build1"
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53703.json"
},
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"binaries": [
{
"binary_name": "gstreamer1.0-plugins-ugly",
"binary_version": "1.16.2-2ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
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{
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],
"package": {
"name": "gst-plugins-ugly1.0",
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"versions": [
"1.18.5-1",
"1.20.0-1",
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],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53703.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gstreamer1.0-plugins-ugly",
"binary_version": "1.20.1-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
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{
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{
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{
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]
}
],
"package": {
"name": "gst-plugins-ugly1.0",
"purl": "pkg:deb/ubuntu/gst-plugins-ugly1.0?arch=source&distro=esm-apps%2Fnoble",
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},
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"1.22.5-1",
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"binaries": [
{
"binary_name": "gstreamer1.0-plugins-ugly",
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}
],
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}
},
{
"ranges": [
{
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{
"introduced": "0"
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}
],
"package": {
"name": "gst-plugins-ugly1.0",
"purl": "pkg:deb/ubuntu/gst-plugins-ugly1.0?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
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"1.26.0-1",
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53703.json"
},
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"binaries": [
{
"binary_name": "gstreamer1.0-plugins-ugly",
"binary_version": "1.26.6-1"
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]
}
},
{
"ranges": [
{
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{
"introduced": "0"
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{
"fixed": "1.28.2-1ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "gst-plugins-ugly1.0",
"purl": "pkg:deb/ubuntu/gst-plugins-ugly1.0?arch=source&distro=esm-apps%2Fresolute",
"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
"1.26.6-1",
"1.26.7-1build1",
"1.27.2-1",
"1.27.90-1",
"1.28.0-1",
"1.28.1-1",
"1.28.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53703.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gstreamer1.0-plugins-ugly",
"binary_version": "1.28.2-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
}
],
"modified": "2026-10-08T19:48:31.037192148Z",
"provider": "osv",
"upstream": [
"CVE-2026-53703"
],
"references": [
"https://ubuntu.com/security/CVE-2026-53703",
"https://www.cve.org/CVERecord?id=CVE-2026-53703",
"https://gstreamer.freedesktop.org/security/sa-2026-0042.html",
"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11825",
"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11826",
"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11831",
"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11832",
"https://ubuntu.com/security/notices/USN-8896-1"
]
},
"related_cves": [
{
"value": "CVE-2026-53703",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 104558,
"published_at": "2026-06-15T20:16:00+00:00"
}