CVE-2026-47844: CWE-668 Exposure of Resource to Wrong Sphere in Spring Reactor Netty
Description
CVE-2026-47844 is a medium severity vulnerability in Spring's Reactor Netty HTTP Server where exception details may be leaked across unrelated requests when the server is configured with Brave Tracing. This affects certain versions of Reactor Netty including 1.3.0 to 1.3.6, 1.1.0 to 1.2.18, and 1.0.52 and earlier. The vulnerability is classified under CWE-668, which involves exposure of resources to the wrong sphere. No official patch or remediation guidance has been provided yet.
CVSS v3.1
Score 5.3medium
Affected software
Spring
Reactor Netty
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Reactor Netty HTTP Server can cause leakage of exception details between unrelated requests under specific configurations involving Brave Tracing. Affected versions include 1.3.0 through 1.3.6, 1.1.0 through 1.2.18, and 1.0.52 and earlier. The issue is categorized as CWE-668, indicating exposure of resources to an unintended scope. The CVSS 3.1 base score is 5.3, reflecting a medium impact primarily due to information leakage without direct confidentiality impact. No vendor advisory or patch information is currently available.
Potential Impact
The vulnerability may lead to unintended exposure of exception details across unrelated HTTP requests, potentially leaking sensitive diagnostic information. There is no impact on confidentiality, but it can affect integrity by exposing internal server state or error conditions. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling Brave Tracing or isolating affected server instances to reduce risk of information leakage.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- vmware
- Date Reserved
- 2026-05-20T10:00:51.004Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8f408eacd9273b494e8062
Added to database: 08/26/2026, 19:37:50 UTC
Last enriched: 09/10/2026, 10:09:11 UTC
Last updated: 10/09/2026, 06:48:17 UTC
Views: 95
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.