Most recent entries from all

bdu:2026-09833

certfr-2026-avi-0773 — De multiples vulnérabilités ont été découvertes dans les produits Atlassian. Certaines d'entre elles permettent à un at…

certfr-2026-avi-0773

Withdrawn: CLEANSTART-2026-BK55944 — Security fixes for CVE-2025-59250, CVE-2026-0636, CVE-2026-33870, CVE-2026-33871, CVE-2026-39852, CVE-2026-41417, CVE-2…

Withdrawn by the publisher.

Affected: CleanStart: keycloak

Multiple security vulnerabilities affect the keycloak package. These issues are resolved in later releases. See references for individual vulnerability details.

EUVD-2026-319082

fkie_cve-2026-42585

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

GHSA-38f8-5428-x5cv — Netty vulnerable to HTTP Request Smuggling due to malformed Transfer-Encoding

Affected: Maven: io.netty:netty-codec-http

### Summary Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks.

### Details Netty incorrectly marks a request as chunked when malformed "Transfer-Encoding: chunked, identity" is present. According to RFC https://datatracker.ietf.org/doc/html/rfc9112#name-message-body-length

" If a Transfer-Encoding header field is present in a request and the chunked transfer coding is not the final encoding, the message body length cannot be determined reliably; the server MUST respond with the 400 (Bad Request) status code and then close the connection. "

A possible scenario is when Netty is behind a proxy that doesn't reject requests with "Transfer-Encoding: chunked, identity", but prefers "Content-Length" and forwards the content to Netty.

### PoC The test below shows Netty successfully parsing the second request, demonstrating how an attacker can smuggle a second request inside a request body.

```java @Test public void test() { String requestStr = "POST / HTTP/1.1\r\n" + "Host: localhost\r\n" + "Transfer-Encoding: chunked, identity\r\n" + "Content-Length: 48\r\n" + "\r\n" + "0\r\n" + "\r\n" + "GET /smuggled HTTP/1.1\r\n" + "Host: localhost\r\n" + "\r\n";

EmbeddedChannel channel = new EmbeddedChannel(new HttpRequestDecoder()); assertTrue(channel.writeInbound(Unpooled.copied…

openSUSE-SU-2026:10795-1 — netty-4.1.133-1.1 on GA media

netty-4.1.133-1.1 on GA media

RHSA-2026:49700 — Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.7 security update

netty: io.netty/netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation netty: Netty: High integrity impact due to improper DNS domain name constraint enforcement netty: io.netty/netty-codec-http: Netty: HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers netty: io.netty/netty-codec-http: Netty: Incorrect HTTP response parsing leads to data confusion netty: io.netty/netty-codec-http: Netty: Request smuggling via malformed Transfer-Encoding parsing netty: io.netty/netty-codec-http: io.netty/netty-codec-http2: Netty: Denial of Service via unbounded memory allocation in HTTP content decompression netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass

UBUNTU-CVE-2026-42585

Affected: Ubuntu:Pro:14.04:LTS: netty, Ubuntu:Pro:16.04:LTS: netty, Ubuntu:Pro:18.04:LTS: netty, Ubuntu:Pro:20.04:LTS: netty, Ubuntu:Pro:22.04:LTS: netty, Ubuntu:Pro:24.04:LTS: netty, Ubuntu:25.10: netty, Ubuntu:Pro:26.04:LTS: netty

WID-SEC-W-2026-1372 — Netty: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.