{"id":"CVE-2026-25050","aliases":["EUVD-2026-5025","GHSA-6f65-4fv2-wwch"],"status":"published","title":"Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy","description":"Vendure is an open-source headless commerce platform. Prior to version 3.5.3, the `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses). In `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found. The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts. Version 3.5.3 fixes the issue.","severity":{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.004,"percentile":0.347,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-202"],"published":"2026-01-30T15:11:40Z","modified":"2026-10-28T02:30:45Z","exploits":[{"source":"pocgithub","id":"Christbowel/CVE-2026-25050","title":"Christbowel/CVE-2026-25050","date":"2026-02-06","url":"https://github.com/Christbowel/CVE-2026-25050"}],"fixes":[{"ecosystem":"npm","package":"@vendure/core","fixed_in":["3.5.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@vendure/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.3"}]}]},{"source":"osv","ecosystem":"npm","package":"@vendure/core","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.5.3"}]}]}],"products":[{"vendor":"vendure","product":"vendure"},{"vendor":"vendurehq","product":"vendure"}],"references":[{"url":"https://github.com/vendurehq/vendure/security/advisories/GHSA-6f65-4fv2-wwch","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/vendurehq/vendure/releases/tag/v3.5.3","tags":["x_refsource_MISC","Product","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25050","tags":["advisory"]},{"url":"https://github.com/vendurehq/vendure/commit/7f0c5556ecddb44a5d5208677a45fdd5923b0cc9","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6f65-4fv2-wwch"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25050.json","tags":["advisory"]},{"url":"https://github.com/vendurehq/vendure","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-25050","title":"Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy","description":"Vendure is an open-source headless commerce platform. Prior to version 3.5.3, the `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses). In `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found. The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts. Version 3.5.3 fixes the issue.","status":"published","published":"2026-01-30T15:11:40.296Z","modified":"2026-01-30T15:45:50.463Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","level":"low","assessor":"cna"}],"cwes":["CWE-202"],"updated_at":"2026-11-02T13:41:19.694734Z"}],"euvd":[{"id":"EUVD-2026-5025","description":"Vendure is an open-source headless commerce platform. Prior to version 3.5.3, the `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses). In `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found. The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts. Version 3.5.3 fixes the issue.","status":"published","published":"2026-01-30T15:11:40Z","modified":"2026-01-30T15:45:50Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"updated_at":"2026-11-02T19:48:45.464917Z"}],"ghsa":[{"id":"GHSA-6f65-4fv2-wwch","title":"Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy","description":"### Summary\nThe `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses).\n\n### Details\nIn `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found:\n\n```typescript\nconst user = await this.userService.getUserByEmailAddress(ctx, data.username);\nif (!user) {\n    return false; // Instant return (~1-5ms)\n}\nconst passwordMatch = await this.verifyUserPassword(ctx, user.id, data.password);\n// Password check takes ~200-400ms with bcrypt (12 rounds)\n```\n\nThe significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts.\n\n### Impact\n- Attackers can enumerate valid user accounts\n- Enables targeted brute-force or phishing attacks\n- Information disclosure (account existence)\n\n### Recommended Fix\nPerform a dummy bcrypt check when user is not found to ensure consistent response times.","status":"published","published":"2026-01-30T19:35:40Z","modified":"2026-01-30T19:35:42Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"cwes":["CWE-202"],"updated_at":"2026-11-02T14:39:20.563096Z"}],"nvd":[{"id":"CVE-2026-25050","description":"Vendure is an open-source headless commerce platform. Prior to version 3.5.3, the `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses). In `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found. The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts. Version 3.5.3 fixes the issue.","status":"published","published":"2026-01-30T16:16:13.967Z","modified":"2026-06-17T10:24:02.637Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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":"low","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-202"],"updated_at":"2026-11-02T14:12:04.769088Z"}],"osv":[{"id":"CVE-2026-25050","title":"Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy","description":"Vendure is an open-source headless commerce platform. Prior to version 3.5.3, the `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses). In `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found. The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts. Version 3.5.3 fixes the issue.","status":"published","published":"2026-01-30T15:11:40.296Z","modified":"2026-10-28T02:30:45.814795002Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"cwes":["CWE-202"],"updated_at":"2026-11-02T15:44:59.438965Z"},{"id":"GHSA-6f65-4fv2-wwch","title":"Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy","description":"### Summary\nThe `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses).\n\n### Details\nIn `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found:\n\n```typescript\nconst user = await this.userService.getUserByEmailAddress(ctx, data.username);\nif (!user) {\n    return false; // Instant return (~1-5ms)\n}\nconst passwordMatch = await this.verifyUserPassword(ctx, user.id, data.password);\n// Password check takes ~200-400ms with bcrypt (12 rounds)\n```\n\nThe significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts.\n\n### Impact\n- Attackers can enumerate valid user accounts\n- Enables targeted brute-force or phishing attacks\n- Information disclosure (account existence)\n\n### Recommended Fix\nPerform a dummy bcrypt check when user is not found to ensure consistent response times.","status":"published","published":"2026-01-30T19:35:40Z","modified":"2026-02-03T03:03:38.76048Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"cwes":["CWE-202"],"updated_at":"2026-11-02T15:46:39.618611Z"}]}}