{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53646", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T20:16:59.648Z", "datePublished": "2026-07-06T22:58:10.415Z", "dateUpdated": "2026-07-07T13:56:05.622Z"}, "containers": {"cna": {"title": "FOSSBilling: Client password reset token reuse allows persistent account takeover", "problemTypes": [{"descriptions": [{"cweId": "CWE-640", "lang": "en", "description": "CWE-640: Weak Password Recovery Mechanism for Forgotten Password", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-vp66-w6rc-x32p", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-vp66-w6rc-x32p"}], "affected": [{"vendor": "FOSSBilling", "product": "FOSSBilling", "versions": [{"version": ">= 0.5.6, < 0.8.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-06T23:02:16.314Z"}, "descriptions": [{"lang": "en", "value": "FOSSBilling is a free, open-source billing and client management system. In versions 0.5.6 through 0.7.2, when a `ClientPasswordReset` record already exists for a client (from a previous unexpired reset request), subsequent calls to the `reset_password` guest API endpoint reuse the existing token instead of generating a new one. The 15-minute validity window is anchored to the first request's `created_at` timestamp, not the time of the most recent email. An attacker who obtained the original reset link remains able to use it even after the victim requests a new reset, because the original token is never invalidated or rotated. Version 0.8.0 patches the issue. Some workarounds are available. Configure a reverse proxy (e.g., Nginx, Apache, Cloudflare) to apply per-IP rate limiting to the `/client/reset-password` endpoint to minimize the window of opportunity, and/or manually clear expired `client_password_reset` records from the database after a client reports a suspected compromise."}], "source": {"advisory": "GHSA-vp66-w6rc-x32p", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-07T13:55:46.808418Z", "id": "CVE-2026-53646", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-07T13:56:05.622Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.5.6,0.8.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FOSSBilling", "source": "cna", "vendor": "FOSSBilling"}, "product": "fossbilling", "vendor": "fossbilling"}], "created": "2026-07-07T00:30:03.114198+00:00", "updated": "2026-07-07T17:15:15.996649+00:00", "vendors": ["fossbilling", "fossbilling$PRODUCT$fossbilling"]}