CVE-2026-935666.5MediumCWE-1035

CVE-2026-93566: Io.netty/netty-codec-http: netty: http request smuggling due to control characters in the chunk-size line

Red Hat · Red Hat Build of Debezium 3.6

Vendor fix available · Affected: Red Hat Build of Debezium 3.6 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.6%probability of exploitation in the next 30 days

48th percentile

050100

Higher than 48% of scored CVEs

6.5MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

A flaw was found in Netty. A remote attacker could exploit this by sending a specially crafted HTTP request that includes control characters within the chunk-size line. This bypasses the intended strict validation, allowing the attacker to inject arbitrary HTTP requests. This vulnerability can lead to HTTP request smuggling, potentially resulting in information disclosure or other unauthorized actions.

Affected products20

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Red Hat · Red Hat Build of Debezium 3.6Versions not stated
Red Hat · Red Hat build of Keycloak 26.4Versions not stated
Red Hat · Red Hat build of Keycloak 26.4Versions not stated
Red Hat · Red Hat build of Keycloak 26.4Versions not stated
Red Hat · Red Hat build of Keycloak 26.4.17Versions not stated
Red Hat · Red Hat build of Keycloak 26.6Versions not stated
Red Hat · Red Hat build of Keycloak 26.6Versions not stated
Red Hat · Red Hat build of Keycloak 26.6Versions not stated
Red Hat · Red Hat build of Keycloak 26.6.8Versions not stated
Red Hat · Red Hat build of Quarkus 3.27.5.SP2Versions not stated
Red Hat · Red Hat build of Quarkus 3.33.3.SP2Versions not stated
Red Hat · Red Hat JBoss Enterprise Application Platform 8.1Versions not stated
Red Hat · Red Hat AMQ Broker 7Versions not stated
Red Hat · Red Hat AMQ ClientsVersions not stated
Red Hat · Red Hat build of Apache Camel 4 for Quarkus 3Versions not stated
Red Hat · Red Hat build of Apache Camel for Spring Boot 4Versions not stated
Red Hat · Red Hat build of Apicurio Registry 3Versions not stated
Red Hat · Red Hat Data Grid 8Versions not stated
Red Hat · Red Hat Fuse 7Versions not stated
Red Hat · Red Hat JBoss Enterprise Application Platform 7Versions not stated

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: CWE-1035 · Other weaknesses
Vendor: Red Hat
Published: September 2026
Band: Unlikely (under 1%), September 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-93566 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.