CVE-2026-35063

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "OpenPLC_V3", "source": "cna", "vendor": "OpenPLC_V3"}, "product": "openplc_v3", "vendor": "openplcproject"}], "analysis": {"en": {"generated_at": "2026-04-09T20:53:51.039590+00:00", "value": {"mitigation_remediation": ["Upgrade to OpenPLC Runtime v4, as recommended by the vendor.", "If migration to v4 is not possible, restrict or disable the REST API user management endpoints until a proper patch is applied."], "summary": {"action": "Upgrade", "impact": "Privilege Escalation"}, "threat_synthesis": {"affected_systems": "OpenPLC V3, the standalone open\u2011source PLC simulator and runtime platform. The product is listed as end of life and only the V3 version is affected.", "description_and_impact": "An authenticated user can delete any other user or create new accounts with administrator privileges in OpenPLC V3 because the REST API only checks for the presence of a JWT token and does not verify the caller\u2019s role, exposing a missing authorization flaw (CWE\u2011862). The result is a local or remote user with normal permissions can gain full administrative control, delete administrators, or create new admin accounts, compromising confidentiality and integrity of the system.", "risk_and_exploitability": "The vulnerability scores an 8.7 on the CVSS scale, indicating a high severity. The EPSS score is not available, and the issue is not recorded in CISA\u2019s KEV catalog, but the required attack conditions are simple: an attacker must authenticate to the REST API. Once authenticated, the flaw can be exploited with minimal effort to elevate privileges, making it a significant risk for any environment that still runs OpenPLC V3 and relies on the default administrator account."}}}}, "created": "2026-04-10T08:39:04.307372+00:00", "updated": "2026-04-10T09:29:49.275257+00:00", "vendors": ["openplcproject", "openplcproject$PRODUCT$openplc_v3"]}