High · published April 8, 2026
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
| Product | Versions | Fixed in |
|---|---|---|
| golang/go | < 1.25.9 | 1.25.9 |
| golang/go | ≥ 1.26.0, < 1.26.2 | 1.26.2 |