CVE-2026-104955

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Source
https://cve.org/CVERecord?id=CVE-2026-104955
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104955.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-104955
Aliases
  • GHSA-x63v-p7wc-47x4
Published
2026-10-05T16:42:25Z
Modified
2026-10-28T02:30:45Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Plane: Project Member can escalate Project Guest to Member via PATCH /project-members/{pk} (BAC / Privilege Escalation)
Details

Plane is an open-source project management tool. Prior to 1.4.0, a Project Member with role 15 can send a PATCH request to the project-member update endpoint at /api/workspaces/{workspace_slug}/projects/{project_id}/members/{member_pk}/ to change another user's project role. The role-update logic blocks only a new role higher than the requester's role, so assigning the equal Member role bypasses the insufficient validation and promotes a Project Guest with role 5 to Member without Project Admin approval. This unauthorized promotion grants the guest the additional project capabilities associated with the Member role and allows a regular member to bypass project governance controls. This issue is fixed in 1.4.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-269",
        "CWE-285"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104955.json"
}
References

Affected packages

Git / github.com/makeplane/plane

Affected ranges

Type
GIT
Repo
https://github.com/makeplane/plane
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
917b23a6c16d93fc00cef67900eff2755e8b13f7
Fixed
4c1bdd1d625fa3f1141e8af9c15423946472069e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.4.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "4c1bdd1d625fa3f1141e8af9c15423946472069e"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.4.0",
            "range":  [
                {
                    "fixed":  "917b23a6c16d93fc00cef67900eff2755e8b13f7"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*
v0.1-dev
v0.10-dev
v0.11-dev
v0.12-dev
v0.12.1-dev
v0.12.2-dev
v0.13-dev
v0.13.1-dev
v0.13.2-dev
v0.14-dev
v0.14.1-dev
v0.14.2-dev
v0.15-dev
v0.15.1-dev
v0.15.2-dev
v0.15.3-hotfix
v0.15.4-dev
v0.16-dev
v0.17-dev
v0.18-dev
v0.19-dev
v0.20-dev
v0.21-dev
v0.22-dev
v0.23.0
v0.23.1
v0.24.0
v0.25.0
v0.25.1
v0.25.2
v0.25.3
v0.26.0
v0.26.1
v0.27.0
v0.27.1
v0.28.0
v0.3.1-dev
v0.4-dev
v0.5-dev
v0.6-dev
v0.7-dev
v0.7.1-dev
v0.8-dev
v0.9-dev
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.3.0
v1.3.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104955.json"