highVulnerability
CVE-2026-54251
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.
Properties
- ghsa_id
- GHSA-vmr9-j6wf-pmh2
- summary
- netty-incubator-codec-ohttp: [OHttpServerCodec] Native Direct-Memory Leak on AEAD Decryption Failure Leads to Gateway Denial of Service
- severity
- high
- cve_id
- CVE-2026-54251
- is_ghsa_only
- false
- ghsa_published
- 2026-08-20T18:39:50Z
- source_url
- https://github.com/advisories/GHSA-vmr9-j6wf-pmh2
- ghsa_updated
- 2026-08-20T18:39:52Z
Related Entities (4)
HAS_WEAKNESS (1)
→[Weakness]Improper Control of a Resource Through its Lifetime
REPORTED_BY (1)
→[Source]GitHub Advisory Database
VULNERABLE_TO (1)
←[Software]maven/io.netty.incubator:netty-incubator-codec-ohttp
AFFECTS (1)
→[Software]maven/io.netty.incubator:netty-incubator-codec-ohttp
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