{"id":"CVE-2026-107852","state":"PUBLISHED","title":"Jexactyl: Stripe checkout confirmation accepts mismatched-currency/amount payments as full payment (payment forgery)","description":"Jexactyl is a customisable game management panel and billing system. Prior to 4.0.5, the POST /api/client/billing/stripe/process endpoint accepts a client-supplied Stripe Checkout Session when payment_status is paid but does not compare amount_total or currency with the referenced order and configured billing currency. On an instance where the billing module is enabled and a Stripe secret key is configured, an authenticated client can therefore complete a lower-value or mismatched-currency payment and cause the order to be processed, provisioning, renewing, upgrading, or unsuspending the purchased server for less than the required price. This issue is fixed in version 4.0.5.","publishedAt":"2026-10-09T20:28:06.513Z","updatedAt":"2026-10-14T02:11:26.450Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Jexactyl Jexactyl"],"affected":[{"vendor":"Jexactyl","product":"Jexactyl","versions":[{"version":"< 4.0.5","status":"affected"}]}],"references":["https://github.com/Jexactyl/Jexactyl/security/advisories/GHSA-rf56-676w-hj4g","https://github.com/Jexactyl/Jexactyl/commit/fdee722c560ac13dc2d26271912203a6085dffe3","https://github.com/Jexactyl/Jexactyl/releases/tag/v4.0.5"],"weaknesses":["CWE-345"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/107xxx/CVE-2026-107852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107852","state":"PUBLISHED","datePublished":"2026-10-09T20:28:06.513Z","dateUpdated":"2026-10-14T02:11:26.450Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-08T22:34:49.292Z"},"containers":{"cna":{"title":"Jexactyl: Stripe checkout confirmation accepts mismatched-currency/amount payments as full payment (payment forgery)","descriptions":[{"lang":"en","value":"Jexactyl is a customisable game management panel and billing system. Prior to 4.0.5, the POST /api/client/billing/stripe/process endpoint accepts a client-supplied Stripe Checkout Session when payment_status is paid but does not compare amount_total or currency with the referenced order and configured billing currency. On an instance where the billing module is enabled and a Stripe secret key is configured, an authenticated client can therefore complete a lower-value or mismatched-currency payment and cause the order to be processed, provisioning, renewing, upgrading, or unsuspending the purchased server for less than the required price. This issue is fixed in version 4.0.5."}],"affected":[{"vendor":"Jexactyl","product":"Jexactyl","versions":[{"version":"< 4.0.5","status":"affected"}]}],"references":[{"url":"https://github.com/Jexactyl/Jexactyl/security/advisories/GHSA-rf56-676w-hj4g","name":"https://github.com/Jexactyl/Jexactyl/security/advisories/GHSA-rf56-676w-hj4g","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Jexactyl/Jexactyl/commit/fdee722c560ac13dc2d26271912203a6085dffe3","name":"https://github.com/Jexactyl/Jexactyl/commit/fdee722c560ac13dc2d26271912203a6085dffe3","tags":["x_refsource_MISC"]},{"url":"https://github.com/Jexactyl/Jexactyl/releases/tag/v4.0.5","name":"https://github.com/Jexactyl/Jexactyl/releases/tag/v4.0.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-09T20:28:06.513Z"},"source":{"advisory":"GHSA-rf56-676w-hj4g","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Jexactyl/Jexactyl/security/advisories/GHSA-rf56-676w-hj4g","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T02:11:02.263904Z","id":"CVE-2026-107852","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T02:11:26.450Z"}}]}}}