vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-54251

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

HIGH
8.7
CVSS Score
Published: September 15, 2026 at 05:13 PM UTC
Updated: September 30, 2026 at 05:51 PM UTC
2 products affected across 2 vendorsNetty Incubator Codec OhttpNetty Incubator Codec Ohttp

Using netty-incubator-codec-ohttp by netty?

Get instant alerts when new vulnerabilities affect netty-incubator-codec-ohttp - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

netty-incubator-codec-ohttp implements Oblivious HTTP (OHTTP) gateway and client functionality using Netty. Prior to 0.0.23.Final, the OHTTP gateway decryption path in codec-ohttp/src/main/java/io/netty/incubator/codec/ohttp/OHttpRequestResponseContext.java allocates a pooled direct ByteBuf for decrypted plaintext before the AEAD tag is verified. When an invalid tag causes decryptChunk() to throw CryptoException, OHttpRequestResponseContext.decodeChunk() does not release the ByteBuf because the allocation is not guarded by try/finally. Repeated invalid encrypted requests can therefore leak native off-heap memory until the gateway is unable to continue serving requests. This issue is fixed in version 0.0.23.Final.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Netty Incubator Codec Ohttp· Io Netty Incubator
60%
v < 0.0.23.Final
Affected range stops below 0.0.23.Final, so it looks safe — our inference, not a vendor statement
Netty Incubator Codec Ohttp· Netty
60%
v < 0.0.23.Final
Affected range stops below 0.0.23.Final, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_CONFIRM
Source: cverecord
https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-vmr9-j6wf-pmh2
x_refsource_MISC
Source: cverecord
https://github.com/netty/netty-incubator-codec-ohttp/commit/ba6871bcbd6b3606872d2a81fabc73b284418bf8
x_refsource_MISC
Source: cverecord
https://github.com/netty/netty-incubator-codec-ohttp/releases/tag/netty-incubator-codec-parent-ohttp-0.0.23.Final

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-664

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card