CVE-2021-38561: Golang Text

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

golang.org/x/text/language in golang.org/x/text before 0.3.7 can panic with an out-of-bounds read during BCP 47 language tag parsing. Index calculation is mishandled. If parsing untrusted user input, this can be used as a vector for a denial-of-service attack.

Affected products

• Golang Text: before 0.3.7 (fixed in 0.3.7)

Published 2022-12-26. Last modified 2026-06-17.