Go/stdlib CVE-2026-42504: high 7.5
Quadratic complexity in WordDecoder.DecodeHeader in mime
Action: Upgrade stdlib to 1.25.11 or later.
Upgrade Go to 1.25.11.
Upgrade Go to 1.26.4.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.25.11 | - |
| 1.26.0-0 | 1.26.4 | - |
Fixed versions
| 1.25.11 | 1.26.4 |
Sources
- osv: GO-2026-5038
- nvd: CVE-2026-42504
- https://go.dev/issue/79217
- https://go.dev/cl/774481
- https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw
CVE-2026-42504 · published · modified · JSON