{"id":"CVE-2026-113659","aliases":[],"cve":{"records":[{"id":"CVE-2026-113659","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-20T14:27:46.641Z","published":"2026-10-20T17:00:59.007Z","modified":"2026-10-28T13:59:49.929Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-10-20T17:00:59.007Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-28T13:59:49.929Z"}],"references":[{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-m2m5-rw3w-cwmj","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.33.0","tags":["x_refsource_MISC"],"source":"GitHub_M"}],"weaknesses":[{"id":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","source":"GitHub_M"},{"id":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","source":"GitHub_M"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-28T13:59:41.334411Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"ApostropheCMS: Client-side Prototype Pollution in apos.http.parseQuery leading to DOM-based XSS against authenticated users","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, an unauthenticated attacker can send a crafted link whose query string is automatically parsed by apos.http.parseQuery when an authenticated victim loads a page with the admin bundle. The parser accepts the special __proto__, constructor, and prototype path keys, allowing browser prototype mutation that can reach an unsafe DOM sink and execute script in the victim's session; anonymous visitors do not load the affected admin context. This issue is fixed in version 4.33.0.","score":6.1,"severity":"medium","published":"2026-10-20T17:00:59.007Z","modified":"2026-10-28T13:59:49.929Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"apostrophecms","name":"apostrophe","platforms":[],"versions":[{"version":"< 4.33.0","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-113659"}],"remediation":[],"references":["https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-m2m5-rw3w-cwmj","https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.33.0"],"sources":[{"name":"CVE","id":"CVE-2026-113659","modified":"2026-10-28T13:59:49.929Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-113659"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1}],"sourceAffected":[],"observedAt":"2026-10-29T14:32:37.134Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T09:35:34.504Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-28T14:35:35.383Z","attemptedAt":"2026-10-28T14:35:35.383Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-28T14:35:35.438Z","attemptedAt":"2026-10-28T14:35:35.438Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T14:35:35.278Z","attemptedAt":"2026-10-28T14:35:35.278Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-28T14:35:35.763Z","attemptedAt":"2026-10-28T14:35:35.763Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-105207","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105207","modified":"Oct 20, 2026, 5:00:59 PM","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","checkedAt":"2026-10-28T14:35:35.278Z"},{"source":"NVD","id":"CVE-2026-113659","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113659","modified":"2026-10-28T14:16:56.857","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","checkedAt":"2026-10-28T14:35:35.383Z"},{"source":"GitHub Advisory Database","id":"GHSA-m2m5-rw3w-cwmj","url":"https://github.com/advisories/GHSA-m2m5-rw3w-cwmj","modified":"2026-10-20T18:18:52Z","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","checkedAt":"2026-10-28T14:35:35.438Z"},{"source":"FIRST EPSS","id":"CVE-2026-113659","url":"https://www.first.org/epss/","probability":0.00345,"percentile":0.27934,"date":"2026-10-28","checkedAt":"2026-10-28T14:35:35.763Z"}],"aiSummary":{"text":"ApostropheCMS versions prior to 4.33.0 have a client-side prototype pollution vulnerability in apos.http.parseQuery, leading to DOM-based XSS against authenticated users. An unauthenticated attacker can send a crafted link to exploit this issue. The vulnerability is fixed in version 4.33.0.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:29:18.647Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-113659"}]}}