{"id":"CVE-2026-44237","state":"PUBLISHED","title":"FreePBX: Authenticated Access can lead to Subsequent OAuth2 Authentication Bypass in API Module","description":"FreePBX is an open source IP PBX. Prior to 17.0.8, the FreePBX api module's OAuth2 implementation does not sufficiently validate client credentials during token issuance. Knowledge of a valid client_id is required. The validateClient() method in ClientRepository.php unconditionally returns true, allowing any party with knowledge of a valid client_id to obtain OAuth2 access tokens without providing the correct client_secret. This vulnerability is fixed in 17.0.8.","publishedAt":"2026-05-29T12:46:22.613Z","updatedAt":"2026-05-30T03:57:39.482Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["FreePBX security-reporting"],"affected":[{"vendor":"FreePBX","product":"security-reporting","versions":[{"version":"< 17.0.8","status":"affected"}]}],"references":["https://github.com/FreePBX/security-reporting/security/advisories/GHSA-vgjf-4h63-8vcc"],"weaknesses":["CWE-1390"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44237.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44237","state":"PUBLISHED","datePublished":"2026-05-29T12:46:22.613Z","dateUpdated":"2026-05-30T03:57:39.482Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-05T15:42:40.519Z"},"containers":{"cna":{"title":"FreePBX: Authenticated Access can lead to Subsequent OAuth2 Authentication Bypass in API Module","descriptions":[{"lang":"en","value":"FreePBX is an open source IP PBX. Prior to 17.0.8, the FreePBX api module's OAuth2 implementation does not sufficiently validate client credentials during token issuance. Knowledge of a valid client_id is required. The validateClient() method in ClientRepository.php unconditionally returns true, allowing any party with knowledge of a valid client_id to obtain OAuth2 access tokens without providing the correct client_secret. This vulnerability is fixed in 17.0.8."}],"affected":[{"vendor":"FreePBX","product":"security-reporting","versions":[{"version":"< 17.0.8","status":"affected"}]}],"references":[{"url":"https://github.com/FreePBX/security-reporting/security/advisories/GHSA-vgjf-4h63-8vcc","name":"https://github.com/FreePBX/security-reporting/security/advisories/GHSA-vgjf-4h63-8vcc","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1390","lang":"en","description":"CWE-1390: Weak Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-29T12:46:22.613Z"},"source":{"advisory":"GHSA-vgjf-4h63-8vcc","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-29T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-44237"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-30T03:57:39.482Z"}}]}}}