Description
The netty incubator codec.bhttp is a java language binary http parser. Prior to version 0.0.21.Final, HKDF_expand returns non-NULL on failure. The byte[] is filled with zeros and has no way to distinguish success from failure. Since this output is used as HKDF key material for the response AEAD, a failure silently produces an all-zero key. When EVP_HPKE_CTX_export fails it also returns an empty byte[] array filled with zeros. This byte[] feeds directly into OHttpCrypto.createResponseAEAD(...). A silent all-zero export secret would produce a deterministic, attacker-predictable AEAD key. Version 0.0.21.Final patches the issue.
Published: 2026-06-04
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-f659-372h-6x3x netty-incubator-codec-ohttp's HPKEContext operations may produce empty byte[] on failures
History

Mon, 08 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 05 Jun 2026 21:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:netty:netty-incubator-codec-ohttp:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


Thu, 04 Jun 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Netty
Netty netty-incubator-codec-ohttp
Vendors & Products Netty
Netty netty-incubator-codec-ohttp

Thu, 04 Jun 2026 17:45:00 +0000

Type Values Removed Values Added
Description The netty incubator codec.bhttp is a java language binary http parser. Prior to version 0.0.21.Final, HKDF_expand returns non-NULL on failure. The byte[] is filled with zeros and has no way to distinguish success from failure. Since this output is used as HKDF key material for the response AEAD, a failure silently produces an all-zero key. When EVP_HPKE_CTX_export fails it also returns an empty byte[] array filled with zeros. This byte[] feeds directly into OHttpCrypto.createResponseAEAD(...). A silent all-zero export secret would produce a deterministic, attacker-predictable AEAD key. Version 0.0.21.Final patches the issue.
Title netty-incubator-codec-ohttp's HPKEContext operations may produce empty byte[] on failures
Weaknesses CWE-330
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Netty Netty-incubator-codec-ohttp
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-08T14:17:59.857Z

Reserved: 2026-04-18T02:51:52.974Z

Link: CVE-2026-41207

cve-icon Vulnrichment

Updated: 2026-06-08T14:17:55.860Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-04T18:16:30.433

Modified: 2026-06-05T21:01:26.883

Link: CVE-2026-41207

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-04T19:00:14Z

Weaknesses