CVE-2026-44893

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

History

05 Aug 2026, 13:22

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:50085 -

30 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:48151 -

21 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:41951 -

10 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:37390 -

09 Jul 2026, 13:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:36820 -

03 Jul 2026, 13:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:34608 -

30 Jun 2026, 03:20

Type Values Removed Values Added
CWE CWE-805
References
  • () https://access.redhat.com/errata/RHSA-2026:26017 -
  • () https://access.redhat.com/errata/RHSA-2026:26018 -
  • () https://access.redhat.com/errata/RHSA-2026:26586 -
  • () https://access.redhat.com/security/cve/CVE-2026-44893 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2488383 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44893.json -

15 Jun 2026, 02:23

Type Values Removed Values Added
References () https://github.com/netty/netty/releases/tag/netty-4.1.135.Final - () 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 - () 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 - () https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv - Vendor Advisory
First Time Netty netty
Netty
CPE cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

12 Jun 2026, 15:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-06-12 15:16

Updated : 2026-08-05 13:22


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

CWE-805

Buffer Access with Incorrect Length Value