{"id":"GHSA-j443-wcqq-xprh","summary":"Terraform Provider for SendGrid: TLS Session Resumption Bypasses Certificate Authority Trust Store Modifications in Go","details":"### Summary\n\nA critical vulnerability has been identified at https://security.snyk.io/package/linux/chainguard:latest/terraform-provider-sendgrid, associated with the underlying Go version.\n\nIf the server's TLS configuration is mutated between connections — for example, a CA is removed from the trusted list via `Config.Clone()` combined with modification or `GetConfigForClient` — the resumed handshake still succeeds using the cached session. The certificate is not re-checked against the updated CA list.\n\nAs a result, a client whose CA was revoked or removed between the first and second connection could still establish a connection on the resumed session.\n\n### Details\n\nIf the server's TLS configuration is mutated between connections — for example, a CA is removed from the trusted list via `Config.Clone()` combined with modification or `GetConfigForClient` — the resumed handshake still succeeds using the cached session. The certificate is not re-checked against the updated CA list.\n\nConsequently, a client whose CA was revoked or removed between the first and second connection could still establish a connection on the resumed session.","aliases":["GO-2026-4673"],"modified":"2026-03-23T04:56:29.135498709Z","published":"2026-03-11T00:32:49Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-03-11T00:32:49Z","nvd_published_at":null,"cwe_ids":["CWE-295"],"severity":"CRITICAL"},"references":[{"type":"WEB","url":"https://github.com/arslanbekov/terraform-provider-sendgrid/security/advisories/GHSA-j443-wcqq-xprh"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-h355-32pf-p2xm"},{"type":"PACKAGE","url":"https://github.com/arslanbekov/terraform-provider-sendgrid"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-CHAINGUARDLATEST-TERRAFORMPROVIDERSENDGRID-15265295"}],"affected":[{"package":{"name":"github.com/arslanbekov/terraform-provider-sendgrid","ecosystem":"Go","purl":"pkg:golang/github.com/arslanbekov/terraform-provider-sendgrid"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.1.3-0.20250606002314-b4a2dfeb7b0f"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-j443-wcqq-xprh/GHSA-j443-wcqq-xprh.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}]}