{"id":"CVE-2026-46511","state":"PUBLISHED","title":"HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack","description":"HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the `/system/api/connectionSettings` endpoint allows an authenticated attacker to perform a complete cross-tenant account takeover. The API dynamically leaks the active session's authentication tokens (including the `jwt`, `user_token`, `site_token`, and `appstore_token`) into a global JavaScript variable (`window.appSettings`). An attacker can exploit the XSS vulnerability to force a victim's browser to silently fetch their specific connection settings, extract the tokens, and exfiltrate them to an attacker-controlled webhook. Version 26.0.0 patches the issue.","publishedAt":"2026-06-05T18:32:55.498Z","updatedAt":"2026-06-08T15:55:20.156Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["haxtheweb haxcms-nodejs","haxtheweb haxcms-php"],"affected":[{"vendor":"haxtheweb","product":"haxcms-nodejs","versions":[{"version":"< 26.0.0","status":"affected"}]},{"vendor":"haxtheweb","product":"haxcms-php","versions":[{"version":"< 26.0.0","status":"affected"}]}],"references":["https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg"],"weaknesses":["CWE-79","CWE-522","CWE-922"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46511.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46511","state":"PUBLISHED","datePublished":"2026-06-05T18:32:55.498Z","dateUpdated":"2026-06-08T15:55:20.156Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-14T19:12:32.754Z"},"containers":{"cna":{"title":"HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack","descriptions":[{"lang":"en","value":"HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the `/system/api/connectionSettings` endpoint allows an authenticated attacker to perform a complete cross-tenant account takeover. The API dynamically leaks the active session's authentication tokens (including the `jwt`, `user_token`, `site_token`, and `appstore_token`) into a global JavaScript variable (`window.appSettings`). An attacker can exploit the XSS vulnerability to force a victim's browser to silently fetch their specific connection settings, extract the tokens, and exfiltrate them to an attacker-controlled webhook. Version 26.0.0 patches the issue."}],"affected":[{"vendor":"haxtheweb","product":"haxcms-nodejs","versions":[{"version":"< 26.0.0","status":"affected"}]},{"vendor":"haxtheweb","product":"haxcms-php","versions":[{"version":"< 26.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg","name":"https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-522","lang":"en","description":"CWE-522: Insufficiently Protected Credentials","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-922","lang":"en","description":"CWE-922: Insecure Storage of Sensitive Information","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-05T18:32:55.498Z"},"source":{"advisory":"GHSA-x3x5-7h4h-gwxg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-08T15:53:25.653088Z","id":"CVE-2026-46511","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-08T15:55:20.156Z"}}]}}}