Netty is a network application framework for development of protocol servers and clients. In netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls `header.retainedSlice(header.readerIndex(), length)` and only then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5, the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled cumulation buffer is never released. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
References
| Link | Resource |
|---|---|
| https://github.com/netty/netty/releases/tag/netty-4.1.135.Final | Release Notes |
| https://github.com/netty/netty/releases/tag/netty-4.2.15.Final | Release Notes |
| https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
15 Jun 2026, 02:23
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Netty netty
Netty |
|
| CPE | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* | |
| References | () https://github.com/netty/netty/releases/tag/netty-4.1.135.Final - Release Notes | |
| References | () https://github.com/netty/netty/releases/tag/netty-4.2.15.Final - Release Notes | |
| References | () https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv - Vendor Advisory |
12 Jun 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-12 15:16
Updated : 2026-06-15 02:23
NVD link : CVE-2026-44893
Mitre link : CVE-2026-44893
CVE.ORG link : CVE-2026-44893
JSON object : View
Products Affected
netty
- netty
CWE
CWE-703
Improper Check or Handling of Exceptional Conditions