{"id":"CVE-2026-102603","aliases":["EUVD-2026-98753","GHSA-3hcj-9m7p-wwm9","GO-2026-6772"],"status":"published","title":"Gotify: Insufficiently Protected Password Change endpoint","description":"Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00335,"percentile":0.27267,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-620"],"published":"2026-10-13T14:21:20Z","modified":"2026-10-28T02:31:13Z","fixes":[{"ecosystem":"Go","package":"github.com/gotify/server/v3","fixed_in":["3.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/gotify/server/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.9.1"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/gotify/server/v3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/gotify/server/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.9.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/gotify/server/v3","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/gotify/server","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/gotify/server/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/gotify/server/v3","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.0"}]}]}],"products":[{"vendor":"devolutions","product":"server"},{"vendor":"gotify","product":"server"}],"references":[{"url":"https://github.com/gotify/server/security/advisories/GHSA-3hcj-9m7p-wwm9","tags":["x_refsource_CONFIRM","exploit","advisory","web"]},{"url":"https://github.com/gotify/server/pull/952","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/gotify/server/commit/a8744482c668e07a61798573ec8e17bd3f6009f9","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/gotify/server/releases/tag/v3.0.0","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102603","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-3hcj-9m7p-wwm9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102603.json","tags":["advisory"]},{"url":"https://github.com/gotify/server","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-102603","title":"Gotify: Insufficiently Protected Password Change endpoint","description":"Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.","status":"published","published":"2026-10-13T14:21:20.867Z","modified":"2026-10-14T14:45:36.133Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-620"],"updated_at":"2026-11-02T13:38:54.394896Z"}],"euvd":[{"id":"EUVD-2026-98753","description":"Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.","status":"published","published":"2026-10-13T14:21:20Z","modified":"2026-10-14T14:45:36Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:27:15.108271Z"}],"ghsa":[{"id":"GHSA-3hcj-9m7p-wwm9","title":"Gotify: Insufficiently Protected Password Change endpoint","description":"The password change endpoint (`POST /current/user/password`) in Gotify versions \u003c= 2.9.1 does not require knowledge of the current password. An attacker in possession of a valid client token can set a new password for the affected user. Recovering the account requires administrator intervention or direct database access.\n\n## PoC\n\n```bash\n# Attacker has obtained a client token\n# No prior password knowledge required\nSTOLEN_TOKEN=\"Cxxxxxxxxxx\"\n\ncurl -X POST \"http://gotify-host/current/user/password?token=${STOLEN_TOKEN}\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"pass\":\"attacker_controls_this\"}'\n# Expected response:\n# HTTP/1.1 200 OK\n```\n\n## Mitigation\n\n- Upgrade to Gotify 3.0.0, which introduces step-up authentication: changing the  password now requires re-authenticating with the account password, or\n- Restrict access to the state-changing endpoints under `/user` and  `/current/user` to trusted networks.","status":"published","published":"2026-10-15T20:15:38Z","modified":"2026-10-15T20:15:40Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-620"],"updated_at":"2026-11-02T14:41:32.483482Z"}],"nvd":[{"id":"CVE-2026-102603","description":"Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.","status":"published","published":"2026-10-13T15:17:30.383Z","modified":"2026-10-16T16:00:33.533Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-620"],"updated_at":"2026-11-02T14:12:57.132005Z"}],"osv":[{"id":"CVE-2026-102603","title":"Gotify: Insufficiently Protected Password Change endpoint","description":"Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.","status":"published","published":"2026-10-13T14:21:20.867Z","modified":"2026-10-28T02:31:13.120315021Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-620"],"updated_at":"2026-11-02T15:44:53.83521Z"},{"id":"GHSA-3hcj-9m7p-wwm9","title":"Gotify: Insufficiently Protected Password Change endpoint","description":"The password change endpoint (`POST /current/user/password`) in Gotify versions \u003c= 2.9.1 does not require knowledge of the current password. An attacker in possession of a valid client token can set a new password for the affected user. Recovering the account requires administrator intervention or direct database access.\n\n## PoC\n\n```bash\n# Attacker has obtained a client token\n# No prior password knowledge required\nSTOLEN_TOKEN=\"Cxxxxxxxxxx\"\n\ncurl -X POST \"http://gotify-host/current/user/password?token=${STOLEN_TOKEN}\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"pass\":\"attacker_controls_this\"}'\n# Expected response:\n# HTTP/1.1 200 OK\n```\n\n## Mitigation\n\n- Upgrade to Gotify 3.0.0, which introduces step-up authentication: changing the  password now requires re-authenticating with the account password, or\n- Restrict access to the state-changing endpoints under `/user` and  `/current/user` to trusted networks.","status":"published","published":"2026-10-15T20:15:38Z","modified":"2026-10-19T21:41:12.735924686Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-620"],"updated_at":"2026-11-02T15:46:35.747385Z"},{"id":"GO-2026-6772","title":"Gotify: Insufficiently Protected Password Change endpoint in github.com/gotify/server","description":"Gotify: Insufficiently Protected Password Change endpoint in github.com/gotify/server","status":"published","published":"2026-10-19T21:08:35Z","modified":"2026-10-19T21:31:37.901957888Z","updated_at":"2026-11-02T15:47:03.11707Z"}]}}