Overly Permissive Cross-domain Whitelist Affecting nacos package, versions <3.2.0-r6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-CHAINGUARDLATEST-NACOS-16061827
- published15 Apr 2026
- disclosed31 Mar 2026
Introduced: 31 Mar 2026
CVE-2026-34237 (opens in a new tab)How to fix?
Upgrade Chainguard nacos to version 3.2.0-r6 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nacos package and not the nacos package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 1.0.1 and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 1.0.1 and 1.1.1.
References
- https://github.com/modelcontextprotocol/java-sdk/blob/main/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletSseServerTransportProvider.java#L289
- https://github.com/modelcontextprotocol/java-sdk/blob/main/mcp-core/src/main/java/io/modelcontextprotocol/server/transport/HttpServletStreamableServerTransportProvider.java#L525
- https://github.com/modelcontextprotocol/java-sdk/security/advisories/GHSA-hv2w-8mjj-jw22