CVE-2026-42507: Arbitrary inputs are included in errors without any escaping in net/textproto

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-05

Last Updated

2026-09-17

EPSS Score

0.41% (percentile: 34.0%)

Affected Products (6)

Other

• 21483-17084
• 21489-17084
• 21411-17084
• 21423-17084
• 21676-17084
• 21778-17084

Security Updates (1)

• Security Update

Revision History

• 2026-06-05: Information published.
• 2026-06-07: Information published.
• 2026-06-07: Information published.
• 2026-06-09: Information published.
• 2026-06-28: Information published.
• 2026-08-12: Information published.
• 2026-09-03: Information published.
• 2026-09-07: Information published.
• 2026-09-09: Information published.
• 2026-09-17: Information published.