CVE-2026-42507

Published: Jun 2, 2026

Modified: Jun 3, 2026

PUBLISHED

Description

When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.

Vendor	Product	Versions
Go standard library	net/textproto	affected `0 - < 1.25.11` affected `1.26.0-0 - < 1.26.4`

References

https://go.dev/issue/79346

https://go.dev/cl/777060

https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw

https://pkg.go.dev/vuln/GO-2026-5039

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CVE-2026-42507

Description

Affected Products

References