Binding to an Unrestricted IP Address Affecting golang.org/x/tools/gopls/internal/lsprpc package, versions <0.22.0-pre.2
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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Test your applications- Snyk IDSNYK-GOLANG-GOLANGORGXTOOLSGOPLSINTERNALLSPRPC-17223218
- published7 Jun 2026
- disclosed6 May 2026
- creditUnknown
Introduced: 6 May 2026
CVE-2026-42503 (opens in a new tab)How to fix?
Upgrade golang.org/x/tools/gopls/internal/lsprpc to version 0.22.0-pre.2 or higher.
Overview
Affected versions of this package are vulnerable to Binding to an Unrestricted IP Address which defaults to 0.0.0.0 when the -port argument is used or the -listen argument is used without specifying a host. An attacker can execute arbitrary code remotely by connecting to the exposed service over the network.
To be vulnerable to this issue, the application has to be using one of the networking flags above, which are designated for debugging, and wouldn't be in use in a usual pipeline-based deployment.