PT-2026-43441 · Maven · Io.Netty.Incubator:Netty-Incubator-Codec-Ohttp

Published 2026-05-26 · Updated 2026-05-26 · CVE-2026-41207

OSV

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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.

Fix

Use of Insufficiently Random Values

Weakness Enumeration

CWE-330

Related Identifiers

CVE-2026-41207

GHSA-F659-372H-6X3X

Affected Products

Io.Netty.Incubator:Netty-Incubator-Codec-Ohttp

References · 3

• https://osv.dev/vulnerability/GHSA-f659-372h-6x3x · Vendor Advisory
• https://github.com/netty/netty-incubator-codec-ohttp/security/advisories/GHSA-f659-372h-6x3x · Note
• https://github.com/netty/netty-incubator-codec-ohttp · Note