{"id":"CVE-2026-118687","revision":"b7d9c3f4af5f46738772faecbfb9eb1b","records":[{"revision":"b7d9c3f4af5f46738772faecbfb9eb1b","observedAt":"2026-10-28T19:46:48.975+00:00","statement":{"source":"cve-program","id":"CVE-2026-118687","aliases":[],"title":"Coder before 2.29.21, 2.34.12, 2.35.9, 2.36.7, and 2.37.4 Missing Audience Validation in GCP Instance-Identity Authentication","description":"Coder before 2.29.21, 2.30.0 before 2.34.12, 2.35.0 before 2.35.9, 2.36.0 before 2.36.7, and 2.37.0 before 2.37.4 does not validate the audience claim of GCE instance-identity JWTs at the POST /api/v2/workspaceagents/google-instance-identity endpoint. Attackers who obtain an unexpired format=full identity token minted for another relying party can replay it to obtain that workspace agent's session token, which remains valid until the workspace's next build.","state":0,"publishedAt":"2026-10-28T18:59:56.265+00:00","modifiedAt":"2026-10-28T18:59:56.265+00:00","affected":[{"ecosystem":"Vendor product","name":"coder","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"coder\",\n                    \"product\": \"coder\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/coder/coder/v2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.37.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.37.4\"\n                        },\n                        {\n                            \"version\": \"2.37.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"coder","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"coder\",\n                    \"product\": \"coder\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/coder/coder/v2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.36.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.36.7\"\n                        },\n                        {\n                            \"version\": \"2.36.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"coder","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"coder\",\n                    \"product\": \"coder\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/coder/coder/v2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.35.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.35.9\"\n                        },\n                        {\n                            \"version\": \"2.35.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"coder","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"coder\",\n                    \"product\": \"coder\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/coder/coder/v2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.30.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.34.12\"\n                        },\n                        {\n                            \"version\": \"2.34.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"coder","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"coder\",\n                    \"product\": \"coder\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/coder/coder/v2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.29.21\"\n                        },\n                        {\n                            \"version\": \"2.29.21\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/coder/coder/security/advisories/GHSA-24vh-q7rg-243w","https://www.vulncheck.com/advisories/coder-before-2.29.21-2.34.12-2.35.9-2.36.7-and-2.37.4-missing-audience-validation-in-gcp-instance-identity-authentication"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118687","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-118687","identifiers":["CVE-2026-118687"]},"retained":false,"historicalAffected":[]}],"coverage":[]}