CVE-2026-4990

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.11.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.11.1"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "chatwoot", "source": "cna", "vendor": "n/a"}, "product": "chatwoot", "vendor": "chatwoot"}], "analysis": {"en": {"generated_at": "2026-03-28T05:54:09.535514+00:00", "value": {"mitigation_remediation": ["Apply any vendor patch or update as soon as it becomes available.", "Disable the signupEnabled feature or configure it to false if the feature is unnecessary.", "Limit access to the /app/login endpoint to trusted IP ranges via firewall or web server rules.", "Deploy or configure a web application firewall to detect and block suspicious requests to the signup endpoint."], "summary": {"action": "Patch", "impact": "Unauthorized Access via Improper Authorization"}, "threat_synthesis": {"affected_systems": "Chatwoot, versions up to 4.11.1, is affected. Any instance running 4.11.1 or earlier is vulnerable.", "description_and_impact": "The flaw in chatwoot up to version 4.11.1 lies in the signup endpoint at /app/login. An attacker may manipulate the signupEnabled parameter, setting it to true, which bypasses existing authorization checks and allows the creation of user accounts or elevation of privileges. The weakness corresponds to improper authentication and authorization controls, labeled CWE-266 and CWE-285.", "risk_and_exploitability": "The CVSS score of 6.9 indicates a medium severity level. No EPSS data is provided, so the exact likelihood of exploitation is unknown; however, the vulnerability is publicly disclosed and may already be in use, and it is not listed in the KEV catalog. Attackers can exploit the flaw remotely by sending crafted requests to the signup endpoint, potentially compromising confidentiality, integrity, and availability of the affected system."}}}}, "created": "2026-03-29T20:29:37.065648+00:00", "updated": "2026-03-30T07:00:02.747521+00:00", "vendors": ["chatwoot", "chatwoot$PRODUCT$chatwoot"]}