CVE-2026-41207
netty-incubator-codec-ohttp's HPKEContext operations may produce empty byte[] on failures
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jun 4, 2026
- Updated
- Jun 8, 2026
- Reserved
- Apr 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | GitHub_M |
Weaknesses
- CWE-330 Use of Insufficiently Random Values
Affected Products
| Product | Versions |
|---|---|
netty-incubator-codec-ohttpnetty |
|
References
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