CVE catalog
CVE-2025-58056
Netty vulnerabilities
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.71% · Oct 25, 2026
Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients. In versions 4.1.124.Final, and 4.2.0.Alpha3 through 4.2.4.Final, Netty incorrectly accepts standalone newline characters (LF) as a chunk-size line terminator, regardless of a preceding carriage return (CR), instead of requiring CRLF per HTTP/1.1 standards. When combined with reverse proxies that parse LF differently (treating it as part of the chunk extension), attackers can craft requests that the proxy sees as one request but Netty processes as two, enabling request smuggling attacks. This is fixed in versions 4.1.125.Final and 4.2.5.Final.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | netty | sid | 1:4.1.48-16 | fixed |
| Debian | netty | forky | 1:4.1.48-16 | fixed |
| Debian | netty | trixie | 1:4.1.48-10+deb13u1 | fixed |
| Debian | netty | trixie-security | 1:4.1.48-10+deb13u1 | fixed |
| Debian | netty | bookworm | 1:4.1.48-7+deb12u2 | fixed |
| Debian | netty | bookworm-security | 1:4.1.48-7+deb12u2 | fixed |
| Ubuntu | netty | noble | Not reported | vulnerable |
| Ubuntu | netty | noble | 1:4.1.48-9ubuntu0.1 | fixed |
| Ubuntu | libnetty-java | noble | 1:4.1.48-9ubuntu0.1 | fixed |
| Cpe | netty | Not reported | 4.2.5 | fixed |
| Ubuntu | netty | pro | 1:4.1.33-1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.33-2 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.33-3 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm2 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm3 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm4 | fixed |
| Ubuntu | netty | 22.04 | 1:4.1.48-4 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u1build0.22.04.1 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u2build0.22.04.1 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u2ubuntu0.1 | fixed |
| Ubuntu | netty | 24.04 | 1:4.1.48-7 | vulnerable |
| Ubuntu | netty | 24.04 | 1:4.1.48-8 | vulnerable |
| Ubuntu | netty | 24.04 | 1:4.1.48-9 | vulnerable |
| Ubuntu | netty | 24.04 | 1:4.1.48-9ubuntu0.1 | fixed |
| Ubuntu | netty | 25.10 | 1:4.1.48-10 | vulnerable |
| Ubuntu | netty | 25.10 | 1:4.1.48-10ubuntu0.25.10.1 | vulnerable |
| Ubuntu | netty | 25.10 | 1:4.1.48-10ubuntu0.25.10.2 | fixed |
| Ubuntu | netty | pro | 1:4.1.33-1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.33-2 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.33-3 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm2 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm3 | vulnerable |
| Ubuntu | netty | pro | 1:4.1.45-1ubuntu0.1~esm4 | fixed |
| Ubuntu | netty-3.9 | 16.04 | 3.9.0.Final-1 | vulnerable |
| Ubuntu | netty-3.9 | 16.04 | 3.9.0.Final-1ubuntu0.1 | vulnerable |
| Ubuntu | netty-3.9 | 18.04 | 3.9.9.Final-1 | vulnerable |
| Ubuntu | netty-3.9 | 18.04 | 3.9.9.Final-1+deb9u1build0.18.04.1 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u1build0.22.04.1 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u2build0.22.04.1 | vulnerable |
| Ubuntu | netty | 22.04 | 1:4.1.48-4+deb11u2ubuntu0.1 | fixed |
| Ubuntu | netty | 24.04 | 1:4.1.48-7 | vulnerable |
| Ubuntu | netty | 24.04 | 1:4.1.48-8 | vulnerable |
| Ubuntu | netty | 24.04 | 1:4.1.48-9 | vulnerable |
| Ubuntu | netty | 24.04 | 1:4.1.48-9ubuntu0.1 | fixed |
| Ubuntu | netty | 25.10 | 1:4.1.48-10 | vulnerable |
| Ubuntu | netty | 25.10 | 1:4.1.48-10ubuntu0.25.10.1 | vulnerable |
| Ubuntu | netty | 25.10 | 1:4.1.48-10ubuntu0.25.10.2 | fixed |
| Opensuse | netty | tumbleweed | 4.1.126-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | netty | source | sid | 1:4.1.48-13 | not yet assigned | Not reported | [1113995] |
| Debian | netty | source | forky | 1:4.1.48-13 | not yet assigned | Not reported | [1113995] |
| Debian | netty | source | trixie | 1:4.1.48-10+deb13u1 | not yet assigned | Not reported | [1113995] |
| Debian | netty | source | bookworm | 1:4.1.48-7+deb12u2 | not yet assigned | Not reported | [1113995] |
| Ubuntu | netty | deb | noble | 1:4.1.48-9ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | libnetty-java | deb | noble | 1:4.1.48-9ubuntu0.1 | Not reported | Not reported | Not reported |
| Cpe | netty | cpe | Not reported | 4.2.5 | Not reported | NVD-CVE-2025-58056 | Not reported |
| Ubuntu | netty | deb | pro | 1:4.1.45-1ubuntu0.1~esm4 | Not reported | USN-7918-1 | Not reported |
| Ubuntu | netty | deb | 22.04 | 1:4.1.48-4+deb11u2ubuntu0.1 | Not reported | USN-7918-1 | Not reported |
| Ubuntu | netty | deb | 24.04 | 1:4.1.48-9ubuntu0.1 | Not reported | USN-7918-1 | Not reported |
| Ubuntu | netty | deb | 25.10 | 1:4.1.48-10ubuntu0.25.10.2 | Not reported | USN-7918-1 | Not reported |
| Ubuntu | netty | deb | pro | 1:4.1.45-1ubuntu0.1~esm4 | Not reported | UBUNTU-CVE-2025-58056 | Not reported |
| Ubuntu | netty | deb | 22.04 | 1:4.1.48-4+deb11u2ubuntu0.1 | Not reported | UBUNTU-CVE-2025-58056 | Not reported |
| Ubuntu | netty | deb | 24.04 | 1:4.1.48-9ubuntu0.1 | Not reported | UBUNTU-CVE-2025-58056 | Not reported |
| Ubuntu | netty | deb | 25.10 | 1:4.1.48-10ubuntu0.25.10.2 | Not reported | UBUNTU-CVE-2025-58056 | Not reported |
| Opensuse | netty | rpm | tumbleweed | 4.1.126-1.1 | Not reported | OPENSUSE-SU-2025:15520-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [netty-bom]Unknown
Source package: [netty]
Details (1)
4.1.136-1.1· noarch · tumbleweedUnknown · Fixed:
4.1.126-1.1Version impact unknown
usn · netty · opensuse · tumbleweed
- [netty-javadoc]Unknown
Source package: [netty]
Details (1)
4.1.136-1.1· noarch · tumbleweedUnknown · Fixed:
4.1.126-1.1Version impact unknown
usn · netty · opensuse · tumbleweed
- [netty-parent]Unknown
Source package: [netty]
Details (1)
4.1.136-1.1· noarch · tumbleweedUnknown · Fixed:
4.1.126-1.1Version impact unknown
usn · netty · opensuse · tumbleweed
- [netty]Fixed
Source package: [netty]
Details (1)
4.1.136-1.1· x86_64 · tumbleweedFixed · Fixed:
4.1.126-1.1usn · netty · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [libnetty-java]Fixed
Source package: [netty]
Details (4)
1:4.1.48-7+deb12u2· all · bookwormFixed · Fixed:
1:4.1.48-7+deb12u2usn · netty · debian · bookworm; usn · netty · debian · 12
1:4.1.48-7+deb12u2· all · bookwormFixed · Fixed:
1:4.1.48-7+deb12u2usn · netty · debian · bookworm; usn · netty · debian · 12
1:4.1.48-7+deb12u2· all · bookworm-securityFixed · Fixed:
1:4.1.48-7+deb12u2usn · netty · debian · bookworm; usn · netty · debian · 12
1:4.1.48-7+deb12u2· all · bookworm-securityFixed · Fixed:
1:4.1.48-7+deb12u2usn · netty · debian · bookworm; usn · netty · debian · 12
[Debian 13 (Trixie)]
- [libnetty-java]Fixed
Source package: [netty]
Details (4)
1:4.1.48-10+deb13u1· all · trixieFixed · Fixed:
1:4.1.48-10+deb13u1usn · netty · debian · 13
1:4.1.48-10+deb13u1· all · trixieFixed · Fixed:
1:4.1.48-10+deb13u1usn · netty · debian · 13
1:4.1.48-10+deb13u1· all · trixie-securityFixed · Fixed:
1:4.1.48-10+deb13u1usn · netty · debian · 13
1:4.1.48-10+deb13u1· all · trixie-securityFixed · Fixed:
1:4.1.48-10+deb13u1usn · netty · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_03114-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2025-58056]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-58056]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-58056]
- [https://osv.dev/vulnerability/USN-7918-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:15520-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-58056]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-58056.json]
- [https://ubuntu.com/security/notices/USN-7918-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-2301.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]