Vulnerability · Published Sep 18, 2026 · Assigned by redhat
CVE-2026-93562Io.netty/netty-codec-http: netty: incomplete validation of malformed transfer-encoding allows http request smuggling
Medium 6.5
In plain English
A medium-severity security flaw in Red Hat AMQ Broker 7 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 64.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A flaw was found in Netty's HTTP/1 decoder. Incomplete validation of malformed Transfer-Encoding headers allows a remote attacker to perform HTTP request smuggling. By sending specially crafted HTTP requests, an attacker can inject arbitrary HTTP requests, potentially bypassing security controls or accessing unauthorized resources.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | netty | no fix listed | DEBIAN-CVE-2026-93562 |
| Debian:13 | netty | no fix listed | DEBIAN-CVE-2026-93562 |
| Debian:14 | netty | no fix listed | DEBIAN-CVE-2026-93562 |
| Ubuntu:26.10 | netty | no fix listed | UBUNTU-CVE-2026-93562 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Build of Debezium 3.6 | see references |
| Red Hat | Red Hat build of Quarkus 3.27.5.SP2 | see references |
| Red Hat | Red Hat build of Quarkus 3.33.3.SP2 | see references |
| Red Hat | Red Hat AMQ Broker 7 | see references |
| Red Hat | Red Hat AMQ Clients | see references |
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 | see references |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | see references |
| Red Hat | Red Hat build of Apicurio Registry 3 | see references |
| Red Hat | Red Hat Build of Keycloak | see references |
| Red Hat | Red Hat Data Grid 8 | see references |
| Red Hat | Red Hat Fuse 7 | see references |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | see references |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | see references |
| Red Hat | Red Hat Single Sign-On 7 | see references |
Weakness: CWE-1035 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- RHSA-2026:69440 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:69470 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:83612 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-93562 vdb-entry, x_refsource_REDHAT
- RHBZ#2536951 issue-tracking, x_refsource_REDHAT