CVE-2026-42503

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

06/05/2026

Last modified:

07/05/2026

Description

gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging.<br /> 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. <br /> As a result, users might inadvertently cause gopls to bind 0.0.0.0.<br /> This can allow a malicious party on the same network to execute code arbitrarily via gopls.

Impact

Vector 3.x

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

8.80

Severity 3.x

HIGH

CVE-2026-42503

Description

Impact

References to Advisories, Solutions, and Tools