CVE-2026-42503 POC (Proof-of-Concept)

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.

Published: 2026-05-06

CVSS: 8.8

CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Download CVE-2026-42503 POC (Proof-of-Concept) here:

Tip: Download official Tor Browser at https://www.torproject.org/download/ to access .onion links.

https://hokyo.gr/poc-457-cve-2026-43101/

https://hokyo.gr/poc-768-cve-2026-26164/

https://hokyo.gr/poc-191-cve-2026-7674/

https://hokyo.gr/poc-700-cve-2026-41642/

https://hokyo.gr/poc-677-cve-2026-44603/