CVE-2026-6819 | HKUDS OpenHarness up to 155 Plugin Installation /plugin default permission

VDB-358593 · CVE-2026-6819 · GCVE-0-2026-6819 HKUDS OPENHARNESS UP TO 155 PLUGIN INSTALLATION /PLUGIN DEFAULT PERMISSION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.9 $0-$5k 3.06+ Summaryinfo A vulnerability marked as critical has been reported in HKUDS OpenHarness up to 155. This issue affects some unknown processing of the file /plugin of the component Plugin Installation Handler. Performing a manipulation results in default permission. This vulnerability was named CVE-2026-6819. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component. Detailsinfo A vulnerability was found in HKUDS OpenHarness up to 155. It has been classified as critical. This affects an unknown code of the file /plugin of the component Plugin Installation Handler. The manipulation with an unknown input leads to a default permission vulnerability. CWE is classifying the issue as CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: HKUDS OpenHarness prior to PR #156 remediation exposes plugin lifecycle commands including /plugin install, /plugin enable, /plugin disable, and /reload-plugins to remote senders by default. Attackers who gain access through the channel layer can remotely manage plugin trust and activation state, enabling unauthorized plugin installation and activation on the system. The weakness was presented by Chia Min Jun Lennon. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-6819 since 04/21/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1222 for this issue. Upgrading to version 156 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 59017e09880fcf9a6f60456a84fb982900b2c0b2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Vendor HKUDS Name OpenHarness Version 155 License open-source Website Product: https://github.com/HKUDS/OpenHarness/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 8.0 VulDB Meta Temp Score: 7.9 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.8 CNA Vector (VulnCheck): 🔒 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: Default permission CWE: CWE-276 / 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: OpenHarness 156 Patch: 59017e09880fcf9a6f60456a84fb982900b2c0b2 Timelineinfo 04/21/2026 Advisory disclosed 04/21/2026 +0 days CVE reserved 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Researcher: Chia Min Jun Lennon Status: Confirmed CVE: CVE-2026-6819 (🔒) GCVE (CVE): GCVE-0-2026-6819 GCVE (VulDB): GCVE-100-358593 Entryinfo Created: 04/21/2026 22:37 Changes: 04/21/2026 22:37 (81) Complete: 🔍 Cache ID: 99:112:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸