CVE-2026-47844

Reactor Netty HTTP Server Leaks Exception Details

State: Published
Severity: 5.3 Medium
Published: Aug 26, 2026
Updated: Aug 26, 2026
Reserved: May 20, 2026

Description

In specific scenarios, the Reactor Netty HTTP Server may leak exception details across unrelated requests. In order for this to happen, the server must be configured with Brave Tracing. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N	vmware

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
Reactor NettySpring	1.3.0 through 1.3.6Affected 1.1.0 through 1.2.18Affected 1.0.52 and earlierAffected

References

https://spring.io/security/cve-2026-47844

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