CVE-2026-35584

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.8.212)"}}], "enrichment": {"confidence": 98.0, "confidence_source": "matching", "scores": [{"score": 98.0, "source": "matching"}]}, "original": {"product": "freescout", "source": "cna", "vendor": "freescout-help-desk"}, "product": "freescout", "vendor": "freescout_helpdesk"}], "analysis": {"en": {"generated_at": "2026-04-07T22:45:07.832213+00:00", "value": {"mitigation_remediation": ["Upgrade FreeScout to version 1.8.212 or later.", "If an update is not immediately possible, restrict access to the GET /thread/read endpoint so that only authenticated users can call it (e.g., via firewall rules, .htaccess, or application code changes).", "Implement server\u2011side validation that ensures the thread_id belongs to the specified conversation_id to eliminate the IDOR permanently.", "Monitor application logs for abnormal read\u2011status changes or enumeration attempts and alert administrators to suspicious activity."], "summary": {"action": "Immediate Patch", "impact": "Unauthorized modification and enumeration of thread data"}, "threat_synthesis": {"affected_systems": "FreeScout help\u2011desk software, version 1.8.212 and earlier. The vendor is freescout-help-desk. The vulnerability applies to all installations that have not been updated to the patched version.", "description_and_impact": "The vulnerability is an unauthenticated IDOR in the GET /thread/read/{conversation_id}/{thread_id} endpoint of FreeScout. The endpoint does not require a logged\u2011in user and does not verify that the supplied thread_id belongs to the given conversation_id. Consequently, an attacker can change the read status of arbitrary threads, infer the existence of threads by checking HTTP 200 versus 404 responses, and adjust opened_at timestamps across conversations. These actions expose sensitive conversation data and allow manipulation of the help\u2011desk timeline without authorization.", "risk_and_exploitability": "The CVSS score is 6.9, indicating a moderate severity. No EPSS score is available, and the vulnerability is not listed in the CISA KEV catalog, implying that no widespread exploitation has been reported. However, because the endpoint is publicly accessible and does not enforce authentication, an attacker can invoke it from anywhere on the internet or from within a compromised network. The primary attack vector is HTTP request to the vulnerable URL, and the impact is limited to the affected site\u2019s data and user experience."}}}}, "created": "2026-04-08T19:36:58.985016+00:00", "updated": "2026-04-08T19:48:03.430914+00:00", "vendors": ["freescout_helpdesk", "freescout_helpdesk$PRODUCT$freescout"]}