{"id":"CVE-2026-46552","aliases":["EUVD-2026-38584","GHSA-chqv-vrj7-qffp"],"status":"published","title":"NocoDB: Shared-base link access can invite arbitrary users as persistent base members","description":"NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, shared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (xc-shared-base-id), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link. Shared-base sessions were mapped to ProjectRoles.VIEWER in packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts, and packages/nocodb/src/utils/acl.ts granted baseUserList and userInvite to that role. The shared frontend (packages/nc-gui/composables/useApi/interceptors.ts) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers. This vulnerability is fixed in 2026.04.1.","severity":{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00313,"percentile":0.24356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-285"],"published":"2026-05-21T20:35:56Z","modified":"2026-11-04T02:47:46Z","exploits":[{"source":"pocgithub","id":"0xmrma/CVE-2026-46552","title":"0xmrma/CVE-2026-46552","date":"2026-05-29","url":"https://github.com/0xmrma/CVE-2026-46552"}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"nocodb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.301.3"}]}]},{"source":"osv","ecosystem":"npm","package":"nocodb","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.301.3"}]}]}],"products":[{"vendor":"nocodb","product":"nocodb"}],"references":[{"url":"https://github.com/nocodb/nocodb/security/advisories/GHSA-chqv-vrj7-qffp","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46552","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-chqv-vrj7-qffp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46552.json","tags":["advisory"]},{"url":"https://github.com/nocodb/nocodb","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-46552","title":"NocoDB: Shared-base link access can invite arbitrary users as persistent base members","description":"NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, shared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (xc-shared-base-id), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link. Shared-base sessions were mapped to ProjectRoles.VIEWER in packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts, and packages/nocodb/src/utils/acl.ts granted baseUserList and userInvite to that role. The shared frontend (packages/nc-gui/composables/useApi/interceptors.ts) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers. This vulnerability is fixed in 2026.04.1.","status":"published","published":"2026-06-23T20:38:29.333Z","modified":"2026-06-24T14:43:31.515Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T13:47:06.353366Z"}],"euvd":[{"id":"EUVD-2026-38584","description":"NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, shared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (xc-shared-base-id), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link. Shared-base sessions were mapped to ProjectRoles.VIEWER in packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts, and packages/nocodb/src/utils/acl.ts granted baseUserList and userInvite to that role. The shared frontend (packages/nc-gui/composables/useApi/interceptors.ts) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers. This vulnerability is fixed in 2026.04.1.","status":"published","published":"2026-06-23T20:38:29Z","modified":"2026-06-24T14:43:31Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:30.642628Z"}],"ghsa":[{"id":"GHSA-chqv-vrj7-qffp","title":"NocoDB: Shared-base link access can invite arbitrary users as persistent base members","description":"### Summary\n\nShared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (`xc-shared-base-id`), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link.\n\n### Details\n\nShared-base sessions were mapped to `ProjectRoles.VIEWER` in `packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts`, and `packages/nocodb/src/utils/acl.ts` granted `baseUserList` and `userInvite` to that role. The shared frontend (`packages/nc-gui/composables/useApi/interceptors.ts`) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers.\n\nThe end-to-end chain:\n\n- `GET /api/v2/meta/bases/:baseId/users` returned the member list to shared-base callers (`@Acl('baseUserList')`).\n- `POST /api/v2/meta/bases/:baseId/users` accepted an invite from shared-base callers (`@Acl('userInvite')`); `base-users.service.ts` inserted a real `nc_users_v2` row with `invite_token` and a `nc_base_users_v2` row for the target base, with `invited_by = null`.\n- The invited account redeemed the invite through the normal signup path (`users.service.ts`), gaining a persistent JWT scoped to the base.\n- Revoking the shared link did not affect the redeemed account.\n\n### Impact\n\n- Confidentiality: shared-base link exposes member email addresses.\n- Integrity: shared-base link can mutate base ACL state by creating new members.\n- Persistence: link-based access converts into durable authenticated access that survives revocation of the share.\n\n### Credit\n\nThis issue was reported by [@0xmrma](https://github.com/0xmrma).","status":"published","published":"2026-05-21T20:35:56Z","modified":"2026-07-20T21:16:44Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:40:47.245721Z"}],"nvd":[{"id":"CVE-2026-46552","description":"NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, shared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (xc-shared-base-id), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link. Shared-base sessions were mapped to ProjectRoles.VIEWER in packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts, and packages/nocodb/src/utils/acl.ts granted baseUserList and userInvite to that role. The shared frontend (packages/nc-gui/composables/useApi/interceptors.ts) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers. This vulnerability is fixed in 2026.04.1.","status":"published","published":"2026-06-23T21:16:58.583Z","modified":"2026-06-25T14:21:00.26Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:12:25.288279Z"}],"osv":[{"id":"CVE-2026-46552","title":"NocoDB: Shared-base link access can invite arbitrary users as persistent base members","description":"NocoDB is software for building databases as spreadsheets. Prior to 2026.04.1, shared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (xc-shared-base-id), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link. Shared-base sessions were mapped to ProjectRoles.VIEWER in packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts, and packages/nocodb/src/utils/acl.ts granted baseUserList and userInvite to that role. The shared frontend (packages/nc-gui/composables/useApi/interceptors.ts) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers. This vulnerability is fixed in 2026.04.1.","status":"published","published":"2026-06-23T20:38:29.333Z","modified":"2026-11-04T02:47:46.870197948Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-285"],"updated_at":"2026-11-04T02:53:00.786919Z"},{"id":"GHSA-chqv-vrj7-qffp","title":"NocoDB: Shared-base link access can invite arbitrary users as persistent base members","description":"### Summary\n\nShared-base sessions were granted the same base-member capabilities as authenticated viewers. Using only the shared-base UUID (`xc-shared-base-id`), an attacker could enumerate base members and invite an arbitrary email into the base as a real member. The invited user could then redeem the invite via the normal signup flow and retain authenticated access even after the owner revoked the shared link.\n\n### Details\n\nShared-base sessions were mapped to `ProjectRoles.VIEWER` in `packages/nocodb/src/strategies/base-view.strategy/base-view.strategy.ts`, and `packages/nocodb/src/utils/acl.ts` granted `baseUserList` and `userInvite` to that role. The shared frontend (`packages/nc-gui/composables/useApi/interceptors.ts`) deliberately removed auth headers in favour of the shared-base header, but the ACL middleware did not distinguish shared sessions from genuine viewers.\n\nThe end-to-end chain:\n\n- `GET /api/v2/meta/bases/:baseId/users` returned the member list to shared-base callers (`@Acl('baseUserList')`).\n- `POST /api/v2/meta/bases/:baseId/users` accepted an invite from shared-base callers (`@Acl('userInvite')`); `base-users.service.ts` inserted a real `nc_users_v2` row with `invite_token` and a `nc_base_users_v2` row for the target base, with `invited_by = null`.\n- The invited account redeemed the invite through the normal signup path (`users.service.ts`), gaining a persistent JWT scoped to the base.\n- Revoking the shared link did not affect the redeemed account.\n\n### Impact\n\n- Confidentiality: shared-base link exposes member email addresses.\n- Integrity: shared-base link can mutate base ACL state by creating new members.\n- Persistence: link-based access converts into durable authenticated access that survives revocation of the share.\n\n### Credit\n\nThis issue was reported by [@0xmrma](https://github.com/0xmrma).","status":"published","published":"2026-05-21T20:35:56Z","modified":"2026-07-20T21:30:36.280842258Z","cvss":[{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T15:46:45.28161Z"}]}}