{"schemaVersion":3,"id":"CVE-2026-42843","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content, media, configuration, users, and system management. Prior to 1.0.0-beta.15, an insecure direct object reference and logic flaw in the Grav API plugin (UsersController::update) allows any authenticated user with basic API access (api.access) to modify their own permission configuration. An attacker can exploit this to escalate their privileges to Super Administrator (admin.super and api.super), leading to full system compromise and potential RCE. This vulnerability is fixed in 1.0.0-beta.15.","dates":{"published":"2026-05-11T15:54:33.485Z","modified":"2026-05-11T19:06:51.035Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00489,"percentile":0.40862,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.139,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.0035},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00489,"percentile":0.40862}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0035,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00489,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00489,"percentile":0.40862}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_GETGRAV_GRAV","name":"Grav","source":"github","url":"https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-863","name":"Incorrect Authorization","description":"The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/863.html"}],"affected":[{"vendor":"getgrav","product":"grav-plugin-api","name":"grav-plugin-api","label":"grav-plugin-api","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.0.0-beta.15","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta1","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta10","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta11","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta12","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta13","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta14","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta2","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta3","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta4","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta5","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta6","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta7","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta8","noFixRecorded":false,"fixedIn":null},{"text":"1.0.0:beta9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.0-beta.15 | 1.0.0:beta1 | 1.0.0:beta10 | 1.0.0:beta11 | 1.0.0:beta12 | 1.0.0:beta13 | 1.0.0:beta14 | 1.0.0:beta2 | 1.0.0:beta3 | 1.0.0:beta4 | 1.0.0:beta5 | 1.0.0:beta6 | 1.0.0:beta7 | 1.0.0:beta8 | 1.0.0:beta9","eol":null,"hubHref":"/vendor/getgrav/grav-plugin-api"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-r945-h4vm-h736","label":"github.com/getgrav/grav/security/advisories/GHSA-r945-h4vm-h736","hostname":"github.com","tags":["X Refsource CONFIRM","Exploit","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-11T15:54:33.485Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-05-11T19:06:51.035Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":45,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T21:44:13.793Z","stale":false,"partial":false}}