CVE-2026-39374 | makeplane up to 1.2.x IssueBulkUpdateDateEndpoint start_date/target_date authorization (GHSA-4q54-h4x9-m329)

VDB-355939 · CVE-2026-39374 · GHSA-4Q54-H4X9-M329 MAKEPLANE UP TO 1.2.X ISSUEBULKUPDATEDATEENDPOINT START_DATE/TARGET_DATE AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.8 $0-$5k 0.91+ Summaryinfo A vulnerability has been found in makeplane plane up to 1.2.x and classified as problematic. Affected by this issue is some unknown functionality of the component IssueBulkUpdateDateEndpoint. This manipulation of the argument start_date/target_date causes authorization. The identification of this vulnerability is CVE-2026-39374. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded. Detailsinfo A vulnerability was found in makeplane plane up to 1.2.x. It has been declared as problematic. Affected by this vulnerability is an unknown part of the component IssueBulkUpdateDateEndpoint. The manipulation of the argument start_date/target_date with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. As an impact it is known to affect integrity, and availability. The summary by CVE is: Plane is an an open-source project management tool. Prior to 1.3.0, the IssueBulkUpdateDateEndpoint allows a project member (ADMIN or MEMBER) to modify the start_date and target_date of ANY issue across the entire Plane instance, regardless of workspace or project membership. The endpoint fetches issues by ID without filtering by workspace or project, enabling cross-boundary data modification. This vulnerability is fixed in 1.3.0. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-39374 since 04/06/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 1.3.0 eliminates this vulnerability. Productinfo Vendor makeplane Name plane Version 1.0 1.1 1.2 Website Product: https://github.com/makeplane/plane/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.9 VulDB Meta Temp Score: 5.8 VulDB Base Score: 5.4 VulDB Temp Score: 5.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.5 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-639 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: plane 1.3.0 Timelineinfo 04/06/2026 CVE reserved 04/07/2026 +1 days Advisory disclosed 04/07/2026 +0 days VulDB entry created 04/07/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-4q54-h4x9-m329 Status: Confirmed CVE: CVE-2026-39374 (🔒) GCVE (CVE): GCVE-0-2026-39374 GCVE (VulDB): GCVE-100-355939 Entryinfo Created: 04/07/2026 23:29 Changes: 04/07/2026 23:29 (66) Complete: 🔍 Cache ID: 99:F7B:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸