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TI-2026-25904 Aliases CVE-2026-33508GHSA-6qh5-m6g3-xhq6

Parse Server: LiveQuery subscription query depth bypass

Priority LOW 36CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-674.

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00354 29th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 8.6.56, 9.6.0-alpha.45parse-server (npm): 9.6.0-alpha.45, 8.6.56

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
parse-communityparse-serverbefore 8.6.56; 9.0.0 to before 9.6.0-alpha.458.6.56, 9.6.0-alpha.45Patch availableCNA
—parse-server (npm)9.0.0 to before 9.6.0-alpha.459.6.0-alpha.45Patch availableGHSA-6qh5-m6g3-xhq6
—parse-server (npm)before 8.6.568.6.56Patch availableGHSA-6qh5-m6g3-xhq6
  • parse-server Vendorparse-community Affected before 8.6.56; 9.0.0 to before 9.6.0-alpha.45 Fixed in 8.6.56, 9.6.0-alpha.45 Patch available CNA
  • parse-server (npm) Vendor— Affected 9.0.0 to before 9.6.0-alpha.45 Fixed in 9.6.0-alpha.45 Patch available GHSA-6qh5-m6g3-xhq6
  • parse-server (npm) Vendor— Affected before 8.6.56 Fixed in 8.6.56 Patch available GHSA-6qh5-m6g3-xhq6

CPE configurations NVD · 45

CPEVersionsRoleVendor
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*before 8.6.56; 9.0.0 to before 9.6.0Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:*9.6.0 alpha1Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha10:*:*:*:node.js:*:*9.6.0 alpha10Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha11:*:*:*:node.js:*:*9.6.0 alpha11Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha12:*:*:*:node.js:*:*9.6.0 alpha12Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha13:*:*:*:node.js:*:*9.6.0 alpha13Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha14:*:*:*:node.js:*:*9.6.0 alpha14Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha15:*:*:*:node.js:*:*9.6.0 alpha15Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha16:*:*:*:node.js:*:*9.6.0 alpha16Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha17:*:*:*:node.js:*:*9.6.0 alpha17Vulnerableparse-community
  • cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.56; 9.0.0 to before 9.6.0 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:* Versions 9.6.0 alpha1 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha10:*:*:*:node.js:*:* Versions 9.6.0 alpha10 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha11:*:*:*:node.js:*:* Versions 9.6.0 alpha11 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha12:*:*:*:node.js:*:* Versions 9.6.0 alpha12 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha13:*:*:*:node.js:*:* Versions 9.6.0 alpha13 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha14:*:*:*:node.js:*:* Versions 9.6.0 alpha14 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha15:*:*:*:node.js:*:* Versions 9.6.0 alpha15 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha16:*:*:*:node.js:*:* Versions 9.6.0 alpha16 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha17:*:*:*:node.js:*:* Versions 9.6.0 alpha17 Vulnerable ·parse-community
Show 35 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha18:*:*:*:node.js:*:*9.6.0 alpha18Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha19:*:*:*:node.js:*:*9.6.0 alpha19Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha2:*:*:*:node.js:*:*9.6.0 alpha2Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha20:*:*:*:node.js:*:*9.6.0 alpha20Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha21:*:*:*:node.js:*:*9.6.0 alpha21Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha22:*:*:*:node.js:*:*9.6.0 alpha22Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha23:*:*:*:node.js:*:*9.6.0 alpha23Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha24:*:*:*:node.js:*:*9.6.0 alpha24Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha25:*:*:*:node.js:*:*9.6.0 alpha25Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha26:*:*:*:node.js:*:*9.6.0 alpha26Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha27:*:*:*:node.js:*:*9.6.0 alpha27Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha28:*:*:*:node.js:*:*9.6.0 alpha28Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha29:*:*:*:node.js:*:*9.6.0 alpha29Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha3:*:*:*:node.js:*:*9.6.0 alpha3Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha30:*:*:*:node.js:*:*9.6.0 alpha30Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha31:*:*:*:node.js:*:*9.6.0 alpha31Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha32:*:*:*:node.js:*:*9.6.0 alpha32Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha33:*:*:*:node.js:*:*9.6.0 alpha33Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha34:*:*:*:node.js:*:*9.6.0 alpha34Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha35:*:*:*:node.js:*:*9.6.0 alpha35Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha36:*:*:*:node.js:*:*9.6.0 alpha36Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha37:*:*:*:node.js:*:*9.6.0 alpha37Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha38:*:*:*:node.js:*:*9.6.0 alpha38Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha39:*:*:*:node.js:*:*9.6.0 alpha39Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha4:*:*:*:node.js:*:*9.6.0 alpha4Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha40:*:*:*:node.js:*:*9.6.0 alpha40Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha41:*:*:*:node.js:*:*9.6.0 alpha41Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha42:*:*:*:node.js:*:*9.6.0 alpha42Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha43:*:*:*:node.js:*:*9.6.0 alpha43Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha44:*:*:*:node.js:*:*9.6.0 alpha44Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha5:*:*:*:node.js:*:*9.6.0 alpha5Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha6:*:*:*:node.js:*:*9.6.0 alpha6Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha7:*:*:*:node.js:*:*9.6.0 alpha7Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha8:*:*:*:node.js:*:*9.6.0 alpha8Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha9:*:*:*:node.js:*:*9.6.0 alpha9Vulnerableparse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha18:*:*:*:node.js:*:* Versions 9.6.0 alpha18 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha19:*:*:*:node.js:*:* Versions 9.6.0 alpha19 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha2:*:*:*:node.js:*:* Versions 9.6.0 alpha2 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha20:*:*:*:node.js:*:* Versions 9.6.0 alpha20 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha21:*:*:*:node.js:*:* Versions 9.6.0 alpha21 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha22:*:*:*:node.js:*:* Versions 9.6.0 alpha22 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha23:*:*:*:node.js:*:* Versions 9.6.0 alpha23 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha24:*:*:*:node.js:*:* Versions 9.6.0 alpha24 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha25:*:*:*:node.js:*:* Versions 9.6.0 alpha25 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha26:*:*:*:node.js:*:* Versions 9.6.0 alpha26 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha27:*:*:*:node.js:*:* Versions 9.6.0 alpha27 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha28:*:*:*:node.js:*:* Versions 9.6.0 alpha28 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha29:*:*:*:node.js:*:* Versions 9.6.0 alpha29 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha3:*:*:*:node.js:*:* Versions 9.6.0 alpha3 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha30:*:*:*:node.js:*:* Versions 9.6.0 alpha30 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha31:*:*:*:node.js:*:* Versions 9.6.0 alpha31 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha32:*:*:*:node.js:*:* Versions 9.6.0 alpha32 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha33:*:*:*:node.js:*:* Versions 9.6.0 alpha33 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha34:*:*:*:node.js:*:* Versions 9.6.0 alpha34 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha35:*:*:*:node.js:*:* Versions 9.6.0 alpha35 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha36:*:*:*:node.js:*:* Versions 9.6.0 alpha36 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha37:*:*:*:node.js:*:* Versions 9.6.0 alpha37 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha38:*:*:*:node.js:*:* Versions 9.6.0 alpha38 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha39:*:*:*:node.js:*:* Versions 9.6.0 alpha39 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha4:*:*:*:node.js:*:* Versions 9.6.0 alpha4 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha40:*:*:*:node.js:*:* Versions 9.6.0 alpha40 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha41:*:*:*:node.js:*:* Versions 9.6.0 alpha41 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha42:*:*:*:node.js:*:* Versions 9.6.0 alpha42 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha43:*:*:*:node.js:*:* Versions 9.6.0 alpha43 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha44:*:*:*:node.js:*:* Versions 9.6.0 alpha44 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha5:*:*:*:node.js:*:* Versions 9.6.0 alpha5 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha6:*:*:*:node.js:*:* Versions 9.6.0 alpha6 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha7:*:*:*:node.js:*:* Versions 9.6.0 alpha7 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha8:*:*:*:node.js:*:* Versions 9.6.0 alpha8 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha9:*:*:*:node.js:*:* Versions 9.6.0 alpha9 Vulnerable ·parse-community

Remediation

  • Fix · CNA parse-server (parse-community) Fixed in 8.6.56, 9.6.0-alpha.45
  • Fix · GHSA-6qh5-m6g3-xhq6 parse-server (npm) Fixed in 9.6.0-alpha.45 Advisory →
  • Fix · GHSA-6qh5-m6g3-xhq6 parse-server (npm) Fixed in 8.6.56 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33508
  2. 2026-10-03 Alias added: GHSA-6qh5-m6g3-xhq6
  3. 2026-10-21 EPSS moved to the 50th–90th percentile
  4. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 2

Advisory 2

Other 3

  • TI-2022-08574 Command Injection in Parse server CVSS 3.1CRITICAL 10.0
  • TI-2024-18136 Parse Server literalizeRegexPart SQL Injection CVSS 3.1CRITICAL 10.0
  • TI-2022-18768 Parse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parser CVSS 3.1CRITICAL 9.8
  • TI-2024-31550 Parse Server's custom object ID allows to acquire role privileges CVSS 3.1HIGH 8.1
  • TI-2023-18316 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution CVSS 3.1CRITICAL 9.8
  • TI-2026-23790 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter CVSS 4.0CRITICAL 9.9
See all 101 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences