Vulnerability in Plane is an open-source project management tool. In (CVE-2026-102985)
Summary
Vulnerability in Plane is an open-source project management tool. In (CVE-2026-102985). Data can be tampered with by attackers. Mitigation: upgrade to 1.4.0 or later.
Original description
The description as published by the source.
Plane is an open-source project management tool. In 1.3.1 and earlier, ProjectMemberViewSet.partial_update places its authorization checks inside the role update branch, so a guest or member can omit role and change another ProjectMember record's is_active field, including deactivating a project administrator. ProjectMemberPreferenceEndpoint.patch separately trusts the member_id path value and lets a project member overwrite another member's preferences. These missing object-level authorization checks permit membership disruption and cross-member preference tampering. The vulnerability is fixed in 1.4.0.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-102985 has been found in Plane is an open-source project management tool. In.
Data can be tampered with by attackers. CVSS score: 6.5/10.
What to do: upgrade Plane is an open-source project management tool. In to 1.4.0 or later.
If unsure, ask your IT team or search "Plane is an open-source project management tool. In CVE-2026-102985" on the vendor's site.
CVE-2026-102985 (Plane is an open-source project management tool. In) — CWE-862 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Patched: 1.4.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-862) exists in Plane is an open-source project management tool. In.
Check the vendor advisory for the affected versions of Plane is an open-source project management tool. In.
Severity: Medium (CVSS 6.5/10). Data can be tampered with by attackers.
Update to 1.4.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Plane is an open-source project management tool. In を使っているサービスとバージョンを洗い出す。
-
2Apply patch patch
Upgrade Plane is an open-source project management tool. In to 1.4.0ステージング環境で 1.4.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。