High
netty — security advisory
A flaw was found in Netty RtspDecoder. The `RtspMethods.valueOf()` function incorrectly strips trailing control bytes from method tokens in Real-Time Streaming Protocol (RTSP) requests. A remote attacker can exploit this by sending a specially crafted RTSP request, leading to method-token smuggling. This vulnerability allows an attacker to bypass method-based access controls and can also be used to launder malicious requests through Netty-based RTSP proxies, making them appear legitimate to backend systems.
- Products
- netty
- Affected versions
- 1:4.1.48-10, 1:4.1.48-10+deb13u1, 1:4.1.48-11, 1:4.1.48-12, 1:4.1.48-13, 1:4.1.48-14, 1:4.1.48-15, 1:4.1.48-16, 1:4.1.48-7, 1:4.1.48-7+deb12u1, 1:4.1.48-7+deb12u2, 1:4.1.48-8, 1:4.1.48-9
- Fixed versions
- Not specified
- CVEs
- CVE-2026-93565
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 20:00 UTC · Revision 1
Source evidence
A flaw was found in Netty RtspDecoder. The `RtspMethods.valueOf()` function incorrectly strips trailing control bytes from method tokens in Real-Time Streaming Protocol (RTSP) requests. A remote attacker can exploit this by sending a specially crafted RTSP request, leading to method-token smuggling. This vulnerability allows an attacker to bypass method-based access controls and can also be used to launder malicious requests through Netty-based RTSP proxies, making them appear legitimate to backend systems.
osv:DEBIAN-CVE-2026-93565
netty
Fixed versions: Not specified
netty
Fixed versions: Not specified
netty
Fixed versions: Not specified
Complete source record
{
"id": "98998340fddc06f02119747e9d3d9e55a5df5d3faf60073d5a9d16f1f661ef79",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-93565",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-93565",
"summary": "A flaw was found in Netty RtspDecoder. The `RtspMethods.valueOf()` function incorrectly strips trailing control bytes from method tokens in Real-Time Streaming Protocol (RTSP) requests. A remote attacker can exploit this by sending a specially crafted RTSP request, leading to method-token smuggling. This vulnerability allows an attacker to bypass method-based access controls and can also be used to launder malicious requests through Netty-based RTSP proxies, making them appear legitimate to backend systems.",
"evidence": "osv:DEBIAN-CVE-2026-93565",
"products": [
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"evidence": "/affected/0/package/name"
},
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{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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],
"severity": "high",
"structured": {
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"aliases": [
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"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
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"events": [
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"package": {
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"ecosystem": "Debian:12"
},
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},
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},
{
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"package": {
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"purl": "pkg:deb/debian/netty?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
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"1:4.1.48-14",
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},
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},
{
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],
"package": {
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},
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},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-16T09:47:35.430303940Z",
"provider": "osv",
"upstream": [
"CVE-2026-93565"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-93565"
]
},
"related_cves": [
{
"value": "CVE-2026-93565",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 338657,
"published_at": "2026-09-18T15:17:20.093+00:00"
}