Vulnerability Description
gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0. As a result, users might inadvertently cause gopls to bind 0.0.0.0. This can allow a malicious party on the same network to execute code arbitrarily via gopls.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-42503?
CVE-2026-42503 is a vulnerability with a CVSS score of 8.8 (HIGH). gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls...
How severe is CVE-2026-42503?
CVE-2026-42503 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42503?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.