BlackTreeCVE IntelligenceUnknown · Unknown
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Debian trixietrixie · source | netty | Vendor fix publishedDebian records a fixed source-package version for this release. | 1:4.1.33-2 | Debian Security Tracker ↗Source updated 23 Oct 2026 |
| Debian bookwormbookworm · source | netty | Vendor fix publishedDebian records a fixed source-package version for this release. | 1:4.1.33-2 | Debian Security Tracker ↗Source updated 23 Oct 2026 |
| Debian forkyforky · source | netty | Vendor fix publishedDebian records a fixed source-package version for this release. | 1:4.1.33-2 | Debian Security Tracker ↗Source updated 23 Oct 2026 |
| Debian sidsid · source | netty | Vendor fix publishedDebian records a fixed source-package version for this release. | 1:4.1.33-2 | Debian Security Tracker ↗Source updated 23 Oct 2026 |
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
| Ecosystem and package | Affected range | First fixed version | Evidence |
|---|---|---|---|
| Mavenio.netty:netty | ECOSYSTEM: introduced 3.3.0.Final; last affected 4.0.0.Alpha8 | Not stated | OSV record ↗aggregator derived · 29 Jun 2026 |
| Mavenio.netty:netty-all | ECOSYSTEM: introduced 4.0.0.Beta1; fixed 4.1.42.Final | 4.1.42.Final | OSV record ↗aggregator derived · 29 Jun 2026 |
| Mavenorg.jboss.netty:netty | ECOSYSTEM: introduced 0; last affected 3.2.9.Final | Not stated | OSV record ↗aggregator derived · 29 Jun 2026 |
| mavenio.netty:netty | >= 3.3.0.Final, <= 4.0.0.Alpha8 | Not stated | GitHub advisory ↗github reviewed aggregator · 29 Jun 2026 |
| mavenio.netty:netty-all | >= 4.0.0.Beta1, < 4.1.42.Final | 4.1.42.Final | GitHub advisory ↗github reviewed aggregator · 29 Jun 2026 |
| mavenorg.jboss.netty:netty | <= 3.2.9.Final | Not stated | GitHub advisory ↗github reviewed aggregator · 29 Jun 2026 |
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
The vendor explicitly identifies these products or versions as containing the fix.
The vendor explicitly identifies these products as affected by this CVE.
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch availableNetty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.
CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'). The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
Operational remediation based on structured source evidence.
Published 26 Sept 2019 · Last source change 8 Oct 2026, 21:14 UTC · CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.