GitHub Advisoryadvisory · Maven

GHSA-vmr9-j6wf-pmh2 netty-incubator-codec-ohttp: [OHttpServerCodec] Native Direct-Memory Leak on AEAD Decryption Failure Leads to Gateway Denial of Service

HIGH Published 2026-08-20 Modified 2026-08-20 Official page ↗
Aliases
CVE-2026-54251
Ecosystem
Maven
Packages
io.netty.incubator:netty-incubator-codec-ohttp
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
CWE-664
Reviewed
2026-08-20

Affected packages

• Maven io.netty.incubator:netty-incubator-codec-ohttp: < 0.0.23.Final → fixed in 0.0.23.Final

Description

The netty-incubator-codec-ohttp library implements Oblivious HTTP (OHTTP) gateway and client functionality using Netty's `ByteBuf` memory management. When an OHTTP gateway processes encrypted client requests, it allocates a pooled direct (native off-heap) `ByteBuf` to hold the decrypted plaintext before the AEAD tag is verified. If the AEAD tag check fails — meaning the ciphertext is invalid — the decryption method throws a `CryptoException`, but the allocated buffer is never released because no `try/finally` block guards the allocation.

Related

Alias · CVE (1)

  • CVE-2026-54251 netty-incubator-codec-ohttp implements Oblivious HTTP (OHTTP) gateway and client functionality using Netty. vulnerability

Weakness · CWE (1)

  • CWE-664 Improper Control of a Resource Through its Lifetime weakness

References