CVE-2026-42503
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductGolang Gopls
PublishedMay 6, 2026
First seenMay 6, 2026
Weakness typeCWE-1327CWE-1327
How to fix
Update
- golang gopls0.22.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| golang gopls | v < 0.22.0 | 0.22.0 |
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