CVE-2026-44893
highpriority · track · 0EPSS 0.006 · 49 %ileDEEUFRRUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (58)
Products and version ranges known to be affected.
- IBM App Connect Enterprise Professionalall versionscert_bundDEcpe:/a:ibm:app_connect_enterprise:professional
- Red Hat Enterprise Linux Data Grid 8all versionscert_bundDEcpe:/o:redhat:enterprise_linux:data_grid_8
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1814Netty: Mehrere SchwachstellenDeutsch2026-06-07csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.
- GHSA-cc37-9q2j-3hfvNetty: HAProxy SSL TLV parsing leaks retained slice on invalid TLV length2026-06-08ghsa · osvUS
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.
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (28)
External citations — patches, advisories, analysis.
- https://github.com/netty/netty/releasesPatchcnnvd
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Finalcnnvd
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Finalcnnvd
- https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfvcnnvd
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Finalenisa_euvd
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Finalenisa_euvd
- https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfvenisa_euvd
- https://access.redhat.com/errata/RHSA-2026:26017nvd
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