critical9.1
CVE-2026-42508
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation.
Impact
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | golang.org/x/crypto | < 0.52.0 | 0.52.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Golang | Crypto | before 0.52.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-5cgq-3rg8-m6cv
- https://nvd.nist.gov/vuln/detail/CVE-2026-42508
- https://go.dev/cl/781220
- https://go.dev/issue/79568
- https://groups.google.com/g/golang-announce/c/a082jnz-LvI
- https://pkg.go.dev/vuln/GO-2026-5021
- https://access.redhat.com/errata/RHSA-2026:23262
- https://access.redhat.com/errata/RHSA-2026:23264
- https://access.redhat.com/security/cve/CVE-2026-42508
- https://bugzilla.redhat.com/show_bug.cgi?id=2480688
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42508.json
- https://access.redhat.com/errata/RHSA-2026:26546
- https://access.redhat.com/errata/RHSA-2026:26547
- https://access.redhat.com/errata/RHSA-2026:35833
- https://access.redhat.com/errata/RHSA-2026:36648
- https://access.redhat.com/errata/RHSA-2026:37123
- https://access.redhat.com/errata/RHSA-2026:37072
- https://access.redhat.com/errata/RHSA-2026:36808
- https://access.redhat.com/errata/RHSA-2026:36797
- https://access.redhat.com/errata/RHSA-2026:36796
- https://access.redhat.com/errata/RHSA-2026:36651
- https://access.redhat.com/errata/RHSA-2026:37387
- https://access.redhat.com/errata/RHSA-2026:40262
- https://access.redhat.com/errata/RHSA-2026:40138
- https://access.redhat.com/errata/RHSA-2026:40118