EUVD-2026-66679
GHSA-xcw7-34p4-wrp4
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Network-accessible exception leakage yields confidentiality impact; no integrity or availability effect applies; Brave Tracing is a server-side config, not an attacker constraint.
Primary rating from Vendor (vmware).
CVSS VectorNVD
Lifecycle Timeline
4DescriptionNVD
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
AnalysisAI
Exception detail leakage in Reactor Netty HTTP Server exposes internal error information across unrelated client requests when the server is configured with Brave Tracing. Affected versions span three distinct release lines - 1.0.x through 1.0.52, 1.1.x through 1.2.18, and 1.3.0 through 1.3.6 - making the exposure broad in terms of version footprint. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target Reactor Netty HTTP Server instance is configured with Brave Tracing integration - this is a non-default, operator-applied configuration. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 base score reflects a moderate, network-accessible vulnerability with no authentication required and low attack complexity once the prerequisite configuration is in place. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to a fixed release of Reactor Netty as specified by the vendor advisory at https://spring.io/security/cve-2026-47844 - the advisory should identify the patched versions for each affected release line (1.0.x, 1.1.x/1.2.x, and 1.3.x); exact fix versions are not independently confirmed from the data provided. … Detailed patch versions, workarounds, and compensating controls in full report. |
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