CVE-2026-42503 — Accidental binding to INADDR_ANY might lead to RCE in golang.org/x/tools/gopls
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), …
Published: 2026-05-06 · CVSS: 8.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7