CVE-2026-48480: netty netty-incubator-codec-ohttp Missing Cryptographic Step

Vulnerability summary

CVE-2026-48480 is a medium (CVSS 6.6) Missing Cryptographic Step vulnerability in netty netty-incubator-codec-ohttp. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.7% of scored vulnerabilities.

Timeline

1. 04-06-2026
   PublishedVulnerability first disclosed.
2. 04-06-2026
   Last modifiedVulnerability information updated.

Description

The netty incubator codec.bhttp is a java language binary http parser. Prior to version 0.0.22.FInal, the codec-ohttp implementation of draft-ietf-ohai-chunked-ohttp does not verify that a cryptographically-signed final chunk was received before the outer HTTP body terminates. An on-path adversary (the OHTTP relay itself, or any MITM on the relay↔gateway or relay↔client transport) can forward a prefix of a legitimate chunked-OHTTP message—cut at a non-final chunk boundary—and close the outer body cleanly, producing no decryption error and no exception in the receiving application. Version 0.0.22.Final fixes the issue.

• CWE-325Missing Cryptographic StepThe product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.