CVE-2026-105639
- Source
- https://cve.org/CVERecord?id=CVE-2026-105639
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105639.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-105639
- Aliases
-
- GHSA-4vj8-p63v-8p24
- Published
- 2026-10-05T18:10:35Z
- Modified
- 2026-10-21T02:54:33Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Plane: Pre-auth workspace invitation hijack via email-squat and self-served invitation token leak in Plane
- Details
-
Plane is an open-source project management tool. Prior to 1.4.0, Plane's signup flow creates a logged-in User row for any submitted email without an out-of-band ownership check, while User.email is unique=True. The authenticated user can call GET /api/users/me/workspaces/invitations/, which returns each WorkspaceMemberInvite whose email matches request.user.email. WorkSpaceMemberInviteSerializer uses fields = "all", exposing the token that protects the invitation join endpoint. An unauthenticated attacker who knows a target's email can register an account using that address, enumerate pending invitations, and accept an invitation as the target, joining a workspace at the invited role. The term pre-auth describes the attacker's initial state: the attacker has no credential before signup, while the enumeration and join requests use the session created by that signup. This issue is fixed in 1.4.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-200", "CWE-287", "CWE-639" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105639.json" }- References
-
- https://github.com/makeplane/plane/releases/tag/v1.4.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105639.json
- https://github.com/makeplane/plane/security/advisories/GHSA-4vj8-p63v-8p24
- https://nvd.nist.gov/vuln/detail/CVE-2026-105639
- https://github.com/makeplane/plane/commit/6220ba990b2276a1a1979d1d5df68f650b8b47ad
- https://github.com/makeplane/plane/pull/9297
Affected packages
Git / github.com/makeplane/plane
Affected ranges
- Type
- GIT
- Repo
- https://github.com/makeplane/plane
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "1.4.0" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "6220ba990b2276a1a1979d1d5df68f650b8b47ad" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v1.4.0", "range": [ { "fixed": "917b23a6c16d93fc00cef67900eff2755e8b13f7" } ], "source": "REFERENCES_TAG" } ] }