Fiche vulnérabilité
CVE-2026-56817 : faille critique netty netty (CVSS 9.8)
Description
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, any caller that can deliver bytes to a Netty channel pipeline containing `XmlDecoder` can send XML with a `DOCTYPE` declaration to an `AsyncXMLInputFactory` instantiated with no security configuration, leaving DTD and entity handling active depending on Aalto XML async parser behavior and creating conditional XML external entity risk. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
En bref
- Sévérité
- Critique (CVSS 9.8)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 21 juil. 2026
- Dernière mise à jour
- 30 juil. 2026
Produits concernés
- netty netty
Références
- Fiche CVE-2026-56817 sur le NVD (NIST)
- github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbe…
- github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b…
- github.com/netty/netty/releases/tag/netty-4.1.136.Final
- github.com/netty/netty/releases/tag/netty-4.2.16.Final
- github.com/netty/netty/security/advisories/GHSA…