CVE-2026-47843: CWE-706 Use of Incorrectly-Resolved Name or Reference in Spring Reactor Netty
Description
CVE-2026-47843 is a low-severity vulnerability in Spring Reactor Netty where, under certain conditions involving multiple clients with different DNS resolver configurations, the system may incorrectly reuse a previously configured DNS resolver. This affects specific versions of Reactor Netty including 1.3.0 through 1.3.6, 1.1.0 through 1.2.18, and 1.0.52 and earlier. The vulnerability is classified under CWE-706, indicating the use of an incorrectly-resolved name or reference. No official patch or remediation guidance has been provided yet.
CVSS v3.1
Score 3.7low
Affected software
Spring
Reactor Netty
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-47843 in Spring Reactor Netty arises when multiple clients with differing DNS resolver configurations cause the reuse of a previously configured DNS resolver. This incorrect reuse can lead to improper DNS resolution behavior. Affected versions include Reactor Netty 1.3.0 to 1.3.6, 1.1.0 to 1.2.18, and 1.0.52 and earlier. The CVSS score is 3.7 (low), with an attack vector of network, high attack complexity, no privileges required, no user interaction, and impact limited to low integrity impact. There is no vendor advisory or patch available at this time, and no known exploits in the wild have been reported.
Potential Impact
The impact is limited to potential incorrect DNS resolution due to reuse of DNS resolver configurations, which may affect the integrity of network communications. There is no confidentiality or availability impact reported. The CVSS score of 3.7 reflects a low severity with limited impact.
Mitigation Recommendations
No official patch or remediation guidance is currently available. Users should monitor the vendor's advisory channels for updates. Given the low severity and lack of known exploits, immediate urgent action is not required.
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: 6a8f408eacd9273b494e8060
Added to database: 08/26/2026, 19:37:50 UTC
Last enriched: 09/10/2026, 10:09:18 UTC
Last updated: 10/11/2026, 18:48:19 UTC
Views: 98
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