{"schema_version":"1.7.3","id":"GHSA-5pf6-2qwx-pxm2","published":"2024-03-06T20:11:59Z","modified":"2026-02-17T20:53:06.536965Z","aliases":["CVE-2024-28110","GO-2024-2618"],"related":["CGA-h36w-39g6-9pq5"],"summary":"Go SDK for CloudEvents's use of WithRoundTripper to create a Client leaks credentials","details":"### Impact\n_What kind of vulnerability is it? Who is impacted?_\nUsing cloudevents.WithRoundTripper to create a cloudevents.Client with an authenticated http.RoundTripper causes the go-sdk to leak credentials to arbitrary endpoints.\n\nThe relevant code is [here](https://github.com/cloudevents/sdk-go/blob/67e389964131d55d65cd14b4eb32d57a47312695/v2/protocol/http/protocol.go#L104-L110) (also inline, emphasis added):\n\n<pre>if p.Client == nil {\n  p.Client = **http.DefaultClient**\n}\n\nif p.roundTripper != nil {\n  p.Client.**Transport = p.roundTripper**\n}\n</pre>\n\nWhen the transport is populated with an authenticated transport such as:\n- [oauth2.Transport](https://pkg.go.dev/golang.org/x/oauth2#Transport)\n- [idtoken.NewClient(...).Transport](https://pkg.go.dev/google.golang.org/api/idtoken#NewClient)\n\n... then http.DefaultClient is modified with the authenticated transport and will start to send Authorization tokens to\n**any endpoint** it is used to contact!\n\nFound and patched by: @tcnghia and @mattmoor\n\n### Patches\nv.2.15.2","affected":[{"package":{"name":"github.com/cloudevents/sdk-go/v2","ecosystem":"Go","purl":"pkg:golang/github.com/cloudevents/sdk-go/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.15.2"}]}],"database_specific":{"last_known_affected_version_range":"<= 2.15.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-5pf6-2qwx-pxm2/GHSA-5pf6-2qwx-pxm2.json"}}],"references":[{"type":"WEB","url":"https://github.com/cloudevents/sdk-go/security/advisories/GHSA-5pf6-2qwx-pxm2"},{"type":"WEB","url":"https://github.com/cloudevents/sdk-go/commit/de2f28370b0d2a0f64f92c0c6139fa4b8a7c3851"},{"type":"PACKAGE","url":"https://github.com/cloudevents/sdk-go"},{"type":"WEB","url":"https://github.com/cloudevents/sdk-go/blob/67e389964131d55d65cd14b4eb32d57a47312695/v2/protocol/http/protocol.go#L104-L110"}],"database_specific":{"cwe_ids":["CWE-522"],"github_reviewed":true,"github_reviewed_at":"2024-03-06T20:11:59Z","nvd_published_at":"2024-03-06T22:15:57Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}