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Medium

Parse Server vulnerable to user enumeration via email verification endpoint

  • Disclosed: 11.03.2026
  • Updated: 11.10.2026 10:22

Impact

The email verification endpoint (/verificationEmailRequest) returns distinct error responses depending on whether an email address belongs to an existing user, is already verified, or does not exist. An attacker can send requests with different email addresses and observe the error codes to determine which email addresses are registered in the application.

This is a user enumeration vulnerability that affects any Parse Server deployment with email verification enabled (verifyUserEmails: true).

Patches

The fix introduces a new Parse Server option emailVerifySuccessOnInvalidEmail (default: true) that returns a generic success response for all verification email requests, regardless of whether the email address is valid, already verified, or non-existent. This prevents an attacker from distinguishing between these cases.

The fix also strengthens the input validation for the related resetPasswordSuccessOnInvalidEmail option, and adds security checks that warn when either enumeration mitigation is disabled.

Workarounds

There is no known workaround.

References

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package parse-server >= 9.0.0-alpha.1, < 9.6.0-alpha.8, < 8.6.34 9.6.0-alpha.8, 8.6.34

References

CVSS score -
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE)
CWE-204
Platform
npm
Package
parse-server
Disclosed
11.03.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-w54v-hf9p-8856 - CC BY 4.0

Vulnerability history: parse-server

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (116) in the archive
Total entries
116
First → latest
06.2019 06.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 17
  • High 49
  • Medium 40
  • Low 10

Disclosures per year

Severity:
  1. parse-server: Denial of service via exponential-time processing of deeply nested query operators
    High CVE-2026-57480 >= 9.0.0, < 9.9.1-alpha.12, < 8.6.82 9.9.1-alpha.12, 8.6.82
  2. Parse Server: Pre-authentication denial of service via client version header regex backtracking
    High CVE-2026-47138 >= 9.0.0, < 9.9.1-alpha.1, < 8.6.77 9.9.1-alpha.1, 8.6.77
  3. Parser Server's streaming file download bypasses afterFind file trigger authorization
    High CVE-2026-34784 >= 9.0.0, < 9.7.1-alpha.1, < 8.6.71 9.7.1-alpha.1, 8.6.71
  4. parse-server has GraphQL complexity validator exponential fragment traversal DoS
    High CVE-2026-34573 >= 9.0.0, < 9.7.0-alpha.12, < 8.6.68 9.7.0-alpha.12, 8.6.68
  5. parse-server has cloud function validator bypass via prototype chain traversal
    Critical CVE-2026-34532 >= 9.0.0, < 9.7.0-alpha.11, < 8.6.67 9.7.0-alpha.11, 8.6.67
  6. LiveQuery protected field leak via shared mutable state across concurrent subscribers
    High CVE-2026-34363 >= 9.0.0, < 9.7.0-alpha.9, < 8.6.65 9.7.0-alpha.9, 8.6.65
  7. Parse Server exposes auth data via verify password endpoint
    High CVE-2026-34215 >= 9.0.0, < 9.7.0-alpha.7, < 8.6.63 9.7.0-alpha.7, 8.6.63
  8. Parse Server exposes auth data via /users/me endpoint
    High CVE-2026-33627 >= 9.0.0, < 9.6.0-alpha.55, < 8.6.61 9.6.0-alpha.55, 8.6.61
  9. Parse Server has SQL Injection through aggregate and distinct field names in PostgreSQL adapter
    High CVE-2026-33539 >= 9.0.0, < 9.6.0-alpha.53, < 8.6.59 9.6.0-alpha.53, 8.6.59
  10. Parse Server: Denial of Service via unindexed database query for unconfigured auth providers
    High CVE-2026-33538 >= 9.0.0, < 9.6.0-alpha.52, < 8.6.58 9.6.0-alpha.52, 8.6.58
  11. Parse Server LiveQuery subscription query depth bypass
    High · 7.5 CVE-2026-33508 >= 9.0.0, < 9.6.0-alpha.45, < 8.6.56 9.6.0-alpha.45, 8.6.56
  12. Parse Server has a query condition depth bypass via pre-validation transform pipeline
    High · 7.5 CVE-2026-33498 >= 9.0.0, < 9.6.0-alpha.44, < 8.6.55 9.6.0-alpha.44, 8.6.55
  13. Parse Server's LiveQuery bypasses CLP pointer permission enforcement
    High · 6.5 CVE-2026-33421 >= 9.0.0, < 9.6.0-alpha.42, < 8.6.53 9.6.0-alpha.42, 8.6.53
  14. Parse Server has an auth provider validation bypass on login via partial authData
    High · 9.1 CVE-2026-33409 >= 9.0.0, < 9.6.0-alpha.41, < 8.6.52 9.6.0-alpha.41, 8.6.52
  15. Parse Server leaks protected fields via LiveQuery afterEvent trigger
    High CVE-2026-33163 >= 9.0.0, < 9.6.0-alpha.35, < 8.6.50 9.6.0-alpha.35, 8.6.50
  16. Parse Server's Cloud function dispatch crashes server via prototype chain traversal
    High CVE-2026-32886 >= 9.0.0, < 9.6.0-alpha.24, < 8.6.47 9.6.0-alpha.24, 8.6.47
  17. Parse Server crash via deeply nested query condition operators
    High CVE-2026-32944 >= 9.0.0, < 9.6.0-alpha.21, < 8.6.45 9.6.0-alpha.21, 8.6.45
  18. Parse Server has a stored XSS filter bypass via Content-Type MIME parameter and missing XML extension blocklist entries
    High CVE-2026-32728 >= 9.0.0, < 9.6.0-alpha.15, < 8.6.41 9.6.0-alpha.15, 8.6.41
  19. Parse Server: Account takeover via operator injection in authentication data identifier
    Critical CVE-2026-32248 >= 9.0.0, < 9.6.0-alpha.12, < 8.6.38 9.6.0-alpha.12, 8.6.38
  20. Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
    Critical CVE-2026-32242 >= 9.0.0, < 9.6.0-alpha.11, < 8.6.37 9.6.0-alpha.11, 8.6.37
  21. Parse Server vulnerable to user enumeration via email verification endpoint this entry
    Medium CVE-2026-31901 >= 9.0.0-alpha.1, < 9.6.0-alpha.8, < 8.6.34 9.6.0-alpha.8, 8.6.34
  22. Parse Server's MFA recovery codes not consumed after use
    High CVE-2026-31875 >= 9.0.0-alpha.1, < 9.6.0-alpha.7, < 8.6.33 9.6.0-alpha.7, 8.6.33
  23. Parse Server has a protected fields bypass via dot-notation in query and sort
    High CVE-2026-31872 >= 9.0.0-alpha.1, < 9.6.0-alpha.6, < 8.6.32 9.6.0-alpha.6, 8.6.32
  24. Parse Server vulnerable to SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL
    Critical CVE-2026-31871 >= 9.0.0-alpha.1, < 9.6.0-alpha.5, < 8.6.31 9.6.0-alpha.5, 8.6.31
  25. Parse Server vulnerable to SQL injection via `Increment` operation on nested object field in PostgreSQL
    Critical CVE-2026-31856 >= 9.0.0-alpha.1, < 9.6.0-alpha.3, < 8.6.29 9.6.0-alpha.3, 8.6.29
  26. Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class routes
    High CVE-2026-31800 >= 9.0.0-alpha.1, < 9.5.2-alpha.12, < 8.6.25 9.5.2-alpha.12, 8.6.25
  27. Parse Server OAuth2 authentication adapter account takeover via identity spoofing
    High CVE-2026-30967 >= 9.0.0-alpha.1, < 9.5.2-alpha.9, < 8.6.22 9.5.2-alpha.9, 8.6.22
  28. Parse Server has role escalation and CLP bypass via direct `_Join` table write
    Critical · 10.0 CVE-2026-30966 >= 9.0.0-alpha.1, < 9.5.2-alpha.7, < 8.6.20 9.5.2-alpha.7, 8.6.20
  29. Parse Server vulnerable to session token exfiltration via `redirectClassNameForKey` query parameter
    Critical CVE-2026-30965 >= 9.0.0-alpha.1, < 9.5.2-alpha.8, < 8.6.21 9.5.2-alpha.8, 8.6.21
  30. Parse Server has a protected fields bypass via logical query operators
    High CVE-2026-30962 >= 9.0.0, < 9.5.2-alpha.6, < 8.6.19 9.5.2-alpha.6, 8.6.19
  31. Parse Server missing audience validation in Keycloak authentication adapter
    High CVE-2026-30949 >= 9.0.0, < 9.5.2-alpha.5, < 8.6.18 9.5.2-alpha.5, 8.6.18
  32. Parse Server vulnerable to stored cross-site scripting (XSS) via SVG file upload
    High CVE-2026-30948 >= 9.0.0, < 9.5.2-alpha.4, < 8.6.17 9.5.2-alpha.4, 8.6.17
  33. Parse Server has a bypass of class-level permissions in LiveQuery
    High CVE-2026-30947 >= 9.0.0, < 9.5.2-alpha.3, < 8.6.16 9.5.2-alpha.3, 8.6.16
  34. Parse Server affected by denial-of-service via unbounded query complexity in REST and GraphQL API
    High CVE-2026-30946 < 8.6.15, >= 9.0.0, < 9.5.2-alpha.2 8.6.15, 9.5.2-alpha.2
  35. Parse Server has a NoSQL injection via token type in password reset and email verification endpoints
    High CVE-2026-30941 >= 9.0.0, < 9.5.2-alpha.1, < 8.6.14 9.5.2-alpha.1, 8.6.14
  36. Parse Server: SQL injection via dot-notation field name in PostgreSQL
    Critical CVE-2026-31840 >= 9.0.0, < 9.6.0-alpha.2, < 8.6.28 9.6.0-alpha.2, 8.6.28
  37. Parse Server has Denial of Service (DoS) and Cloud Function Dispatch Bypass via Prototype Chain Resolution
    High CVE-2026-30939 < 8.6.13, >= 9.0.0-alpha.1, < 9.5.1-alpha.2 8.6.13, 9.5.1-alpha.2
  38. Parse Server has Regular Expression Denial of Service (ReDoS) via `$regex` query in LiveQuery
    High CVE-2026-30925 >= 9.0.0-alpha.1, < 9.5.0-alpha.14, < 8.6.11 9.5.0-alpha.14, 8.6.11
  39. Parse Server: JWT audience validation bypass in Google, Apple, and Facebook authentication adapters
    Critical CVE-2026-30863 >= 9.0.0-alpha.1, < 9.5.0-alpha.11, < 8.6.10 9.5.0-alpha.11, 8.6.10
  40. parse-server's endpoint `/loginAs` allows `readOnlyMasterKey` to gain full read and write access as any user
    High CVE-2026-30229 < 8.6.6, >= 9.0.0, < 9.5.0-alpha.4 8.6.6, 9.5.0-alpha.4
  41. Parse Server's Cloud Hooks and Cloud Jobs bypass `readOnlyMasterKey` write restriction
    High CVE-2026-29182 >= 9.0.0, < 9.4.1-alpha.3, < 8.6.4 9.4.1-alpha.3, 8.6.4
  42. Parse Server: Account takeover via JWT algorithm confusion in Google auth adapter
    Critical CVE-2026-27804 >= 9.0.0, < 9.3.1-alpha.4, < 8.6.3 9.3.1-alpha.4, 8.6.3
  43. Parse Server is vulnerable to Server-Side Request Forgery (SSRF) via Instagram OAuth Adapter
    High CVE-2025-68150 >= 9.0.0, < 9.1.1-alpha.1, < 8.6.2 9.1.1-alpha.1, 8.6.2
  44. Parse Server Vulnerable to Server-Side Request Forgery (SSRF) in File Upload via URI Format
    High · 7.5 CVE-2025-64430 >= 4.2.0, < 7.5.4, >= 8.0.0, < 8.4.0-alpha.2 7.5.4, 8.4.0-alpha.2
  45. Parse Server's custom object ID allows to acquire role privileges
    High · 8.1 CVE-2024-47183 < 6.5.9, >= 7.0.0, < 7.3.0 6.5.9, 7.3.0
  46. ZDI-CAN-23894: Parse Server literalizeRegexPart SQL Injection Authentication Bypass Vulnerability
    Critical · 9.8 CVE-2024-39309 < 6.5.7, >= 7.0.0, < 7.1.0 6.5.7, 7.1.0
  47. Server crashes on invalid Cloud Function or Cloud Job name
    Critical · 9.0 CVE-2024-29027 < 6.5.5, >= 7.0.0-alpha.1, < 7.0.0-alpha.29 6.5.5, 7.0.0-alpha.29
  48. ZDI-CAN-19105: Parse Server literalizeRegexPart SQL Injection
    Critical · 10.0 CVE-2024-27298 < 6.5.0, >= 7.0.0-alpha.1, < 7.0.0-alpha.20 6.5.0, 7.0.0-alpha.20
  49. Parse Server may crash when uploading file without extension
    High · 7.5 CVE-2023-46119 >= 1.0.0, < 5.5.6, >= 6.0.0, < 6.3.1 5.5.6, 6.3.1
  50. Trigger `beforeFind` not invoked in internal query pipeline when fetching pointer
    High · 7.5 CVE-2023-41058 >= 1.0.0, < 5.5.5, >= 6.0.0, < 6.2.2 5.5.5, 6.2.2
  51. Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution
    Critical · 9.8 CVE-2023-36475 < 5.5.2, >= 6.0.0, < 6.2.1 5.5.2, 6.2.1
  52. Parse Server option `masterKeyIps` vulnerability to IP spoofing
    High · 8.7 CVE-2023-22474 < 5.4.1 5.4.1
  53. Parse Server is vulnerable to Prototype Pollution via Cloud Code Webhooks
    High · 7.2 CVE-2022-41879 < 4.10.20, >= 5.0.0, < 5.3.3 4.10.20, 5.3.3
  54. Parse Server vulnerable to Prototype Pollution via Cloud Code Webhooks or Cloud Code Triggers
    High · 7.2 CVE-2022-41878 < 4.10.19, >= 5.0.0, < 5.3.2 4.10.19, 5.3.2
  55. Remote code execution via MongoDB BSON parser through prototype pollution
    Critical · 9.8 CVE-2022-39396 < 4.10.18, >= 5.0.0, < 5.3.1 4.10.18, 5.3.1
  56. parse-server crashes when receiving file download request with invalid byte range
    High · 7.5 CVE-2022-39313 < 4.10.17, >= 5.0.0, < 5.2.8 4.10.17, 5.2.8
  57. Parse Server vulnerable to brute force guessing of user sensitive data via search patterns
    High · 8.6 CVE-2022-36079 < 4.10.14, >= 5.0.0, < 5.2.5 4.10.14, 5.2.5
  58. Protected fields exposed via LiveQuery
    High · 8.2 CVE-2022-31112 < 4.10.13, >= 5.0.0, < 5.2.4 4.10.13, 5.2.4
  59. Invalid file request can crash server
    High · 7.5 CVE-2022-31089 < 4.10.12, >= 5.0.0, < 5.2.3 4.10.12, 5.2.3
  60. Authentication bypass vulnerability in Apple Game Center auth adapter
    High · 8.6 CVE-2022-31083 < 4.10.11, >= 5.0.0, < 5.2.2 4.10.11, 5.2.2
Show more (7) Showing 60 of 67

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