{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-108109", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-09T13:44:40.883Z", "datePublished": "2026-10-09T14:33:32.201Z", "dateUpdated": "2026-10-09T17:26:03.792Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-09T14:33:32.201Z" }, "datePublic": "2026-08-06T00:00:00.000Z", "title": "PHPNuxBill through 2025.3.20 Account Takeover via Brute-Forceable Password Reset Code", "descriptions": [ { "lang": "en", "value": "PHPNuxBill through 2025.3.20 contains an account takeover vulnerability in the customer password reset flow in system/controllers/forgot.php that allows unauthenticated attackers to brute-force the 6-digit otp_code. Attackers knowing a customer username can guess the code without attempt limits or lockout, then read the newly set password from the HTTP response to hijack the account." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Restriction of Excessive Authentication Attempts", "cweId": "CWE-307", "type": "CWE" } ] } ], "affected": [ { "vendor": "hotspotbilling", "product": "phpnuxbill", "defaultStatus": "unaffected", "versions": [ { "version": "0", "status": "affected", "versionType": "custom", "lessThanOrEqual": "2025.3.20" } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL" } } ], "references": [ { "url": "https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-337r-rrrc-r559", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-337r-rrrc-r559)" }, { "url": "https://github.com/hotspotbilling/phpnuxbill/commit/c3c2a92d468af91136d747b75142ed72f10320cc", "tags": [ "patch" ], "name": "Patch Commit" }, { "url": "https://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/controllers/forgot.php#L41", "tags": [ "technical-description" ] }, { "url": "https://github.com/hotspotbilling/phpnuxbill", "tags": [ "product" ] }, { "name": "VulnCheck Advisory: PHPNuxBill through 2025.3.20 Account Takeover via Brute-Forceable Password Reset Code", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-account-takeover-via-brute-forceable-password-reset-code" } ], "credits": [ { "lang": "en", "value": "tonghuaroot", "type": "finder" }, { "lang": "en", "value": "leediay153 from Viettel Post", "type": "reporter" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "references": [ { "url": "https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-337r-rrrc-r559", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-09T17:25:00.595911Z", "id": "CVE-2026-108109", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "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": "2026-10-09T17:26:03.792Z" } } ] } }