CVE-2026-42503 (GCVE-0-2026-42503)

Vulnerability from cvelistv5 – Published: 2026-05-06 16:20 – Updated: 2026-05-07 03:55
VLAI
Title
Accidental binding to INADDR_ANY might lead to RCE in golang.org/x/tools/gopls
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 00:00 UTC
CWE
  • CWE-1327 - Binding to an unrestricted IP address
Assigner
Go CNA under the Google root
CNA scorecard E 42/100 over 74 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
golang.org/x/tools golang.org/x/tools/gopls Affected: 0.0.0 , < 0.22.0 (semver)
guessed Create a notification for this product.
Date Public
2026-05-06 15:19
Show details on NVD website
To clipboard 

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