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This issue is fixed in version 0.91.1.","state":0,"publishedAt":"2026-09-21T15:45:27.61+00:00","modifiedAt":"2026-09-21T20:45:49.51+00:00","affected":[{"ecosystem":"Vendor product","name":"hatchet","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"hatchet-dev\",\n                    \"product\": \"hatchet\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.91.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-phg3-3g28-wq9v","https://github.com/hatchet-dev/hatchet/commit/f90464189ad642251e09412d0f99fde353036428"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-61687","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-61687","identifiers":["CVE-2026-61687"]},"retained":false,"historicalAffected":[]},{"revision":"0bab26b986a34f9fb22ab8647406cb87","observedAt":"2026-11-09T14:10:24.421+00:00","statement":{"source":"euvd","id":"EUVD-2026-83978","aliases":["CVE-2026-61687","GHSA-phg3-3g28-wq9v"],"title":"Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. 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Prior to 0.91.1, ValidateOAuthState clears the oauth_state_ session value to an empty string after a successful OAuth callback and later accepts an empty state parameter as equal, allowing an unauthenticated attacker to bind a victim's Hatchet session to an attacker-controlled OAuth identity. Exploitation requires the victim to have completed an OAuth flow in the current session and the deployment to enable auth.google.enabled, auth.github.enabled, or the Slack integration. This issue is fixed in version 0.91.1.","state":0,"publishedAt":"2026-09-21T16:17:09.997+00:00","modifiedAt":"2026-09-24T21:25:27.05+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/hatchet-dev/hatchet/commit/f90464189ad642251e09412d0f99fde353036428","https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-phg3-3g28-wq9v"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61687","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-287","CWE-352","CWE-384","CWE-1275"],"productCriteria":[],"sourceDates":{"published":"2026-09-21T16:17:09.997","lastModified":"2026-09-24T21:25:27.050"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. 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Bug present on `main` HEAD and in every tagged release up to and including v0.86.26 (commit `243f41d9e1161e70d47dfc0a6509f1c4ddfc9c23`).","state":0,"publishedAt":"2026-09-21T15:47:01+00:00","modifiedAt":"2026-11-04T23:45:05.7566332+00:00","affected":[{"ecosystem":"Go","name":"github.com/hatchet-dev/hatchet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.91.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-phg3-3g28-wq9v","https://nvd.nist.gov/vuln/detail/CVE-2026-61687","https://github.com/hatchet-dev/hatchet/commit/f90464189ad642251e09412d0f99fde353036428","https://github.com/hatchet-dev/hatchet"],"sourceUrl":"https://github.com/advisories/GHSA-phg3-3g28-wq9v","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-phg3-3g28-wq9v","identifiers":["GHSA-phg3-3g28-wq9v","CVE-2026-61687","GO-2026-6535"]},"retained":false,"historicalAffected":[]},{"revision":"30ac79755ddb49d2b98b6a5cd6d6f1f3","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6535","aliases":["CVE-2026-61687","GHSA-phg3-3g28-wq9v"],"title":"Unauthenticated OAuth state CSRF via empty-state collision in ValidateOAuthState in github.com/hatchet-dev/hatchet","description":"Unauthenticated OAuth state CSRF via empty-state collision in ValidateOAuthState in github.com/hatchet-dev/hatchet","state":0,"publishedAt":"2026-09-28T16:43:40+00:00","modifiedAt":"2026-10-07T17:45:12.9758115+00:00","affected":[{"ecosystem":"Go","name":"github.com/hatchet-dev/hatchet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.91.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-phg3-3g28-wq9v","https://github.com/hatchet-dev/hatchet/commit/f90464189ad642251e09412d0f99fde353036428"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6535","license":"OSV · upstream source license applies","key":"osv:GO-2026-6535","identifiers":["GO-2026-6535","CVE-2026-61687","GHSA-phg3-3g28-wq9v"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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