CVE-2026-59920 - Vulnerability details

6.5/10

CVSS 3.1

CVE-2026-59920

resolved Published 2026-07-29 Updated 2026-08-06

NVD

MITRE

OpenCVE

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Vulnerability Data from Dependency-Track

Affected versions

5.6

5.6.1 5.6.0

5.5

5.5.17 5.5.16 5.5.15 5.5.14 5.5.13 5.5.12 5.5.11 5.5.10 5.5.9 5.5.8 5.5.7 5.5.6 5.5.5 5.5.4 5.5.3 5.5.2 5.5.1 5.5.0

5.4

5.4.11 5.4.10 5.4.9 5.4.8 5.4.7 5.4.6 5.4.5 5.4.4 5.4.3 5.4.2 5.4.1 5.4.0

Fixed in versions 5.7.0, 5.6.2, 5.5.18 and 5.4.12

Score

6.5 CVSS 3.1 NVD CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Description

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder ( StompSubframeEncoder ) does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline ( \n ) characters in a header value are written directly to the wire, allowing an attacker who controls a header value to inject additional STOMP headers. This happens because the encoder intentionally skips escaping for CONNECT/CONNECTED frames per the STOMP 1.2 specification but never rejects the raw newlines, and since a broker parses each line as a separate header, an attacker controlling a value such as a user-supplied login or passcode can overwrite connection parameters or add authentication/role headers to bypass authentication or escalate privileges (the actual impact is broker-dependent). The issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Same vulnerability as

GHSA-3g8r-4pfx-jmfh resolved according to EUVD-2026-50424

Analysis Read only

State

Justification

Recommandation

Workaround

The analysis can only be edited by the BlueMind security teams: log in.

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