On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated…
Go·CWE-299·Published 2026-10-21
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.
Affected versions include `emSign ECC Root CA - G3`, which can allow certificate paths through distrusted emSign intermediates. Affected versions may accept certificate paths containing distrusted emSign intermediate public keys. The private keys corresponding to these intermediates are now well known. Version 1.0.10+ removes this root. Version 0.26.11 is a compatibility wrapper that re-exports `parent::TLS_SERVER_ROOT_CERTS` from its `webpki-root-certs` 1.x dependency; it contains no separate root certificate list. Its resolved 1.x dependency must be updated to 1.0.10 or later.
| Version | Type | Source | Base | Exp | Impact | Vector |
|---|---|---|---|---|---|---|
| 3.1 | Primary | cve.org | 6.8 | — | — | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| 3.1 | Secondary | NVD | 6.8 | 1.6 | 5.2 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| 3.1 | Secondary | ENISA EUVD | 6.8 | — | — | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |