Vulnerability details
CVE-2026-93564
Red Hat AMQ Broker 7Red Hat Fuse 7Red Hat JBoss Enterprise Application Platform 7Red Hat Single Sign-On 7Red Hat build of Apache Camel 4 for Quarkus 3Red Hat build of Apache Camel for Spring Boot 4
Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf reference-count leak (incomplete fix of pr #16881)
CVSS 3.1
7.5High
Official description
A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service (DoS) for the affected system.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Red Hat | Red Hat AMQ Broker 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Fuse 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Single Sign-On 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat build of Apicurio Registry 3 | All | CVEProject cvelistV5 (CNA) |
References and advisories
10- https://access.redhat.com/errata/RHSA-2026:69440 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:69470 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:70257 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83612 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:95759 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:95760 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:95761 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:95762 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-93564 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2536953 issue-trackingx_refsource_REDHAT
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-09-18
- Last updated
- 2026-11-06
- State
- Published
- Assigner (CNA)
- redhat
Exploit prediction (EPSS)
1.05%
Probability of exploitation in 30 days
64.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-1035