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TI-2026-23773 Aliases CVE-2026-30948GHSA-hcj7-6gxh-24ww

Parse Server has stored cross-site scripting (XSS) via SVG file upload

Priority LOW 36CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.4 and 8.6.17, a stored cross-site scripting (XSS) vulnerability allows any authenticated user to upload an SVG file containing JavaScript. The file is served inline with Content-Type: image/svg+xml and without protective headers, causing the browser to execute embedded scripts in the Parse Server origin. This can be exploited to steal session tokens from localStorage and achieve account takeover. The default fileExtensions option blocks HTML file extensions but does not block SVG, which is a well-known XSS vector. All Parse Server deployments where file upload is enabled for authenticated users (the default) are affected. This vulnerability is fixed in 9.5.2-alpha.4 and 8.6.17.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00245 15th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 8.6.17parse-server (npm): 9.5.2-alpha.4, 8.6.17

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-server>= 9.0.0 < 9.5.2-alpha.4; before 8.6.178.6.17Patch availableCNA
—parse-server (npm)9.0.0 to before 9.5.2-alpha.49.5.2-alpha.4Patch availableGHSA-hcj7-6gxh-24ww
—parse-server (npm)before 8.6.178.6.17Patch availableGHSA-hcj7-6gxh-24ww
  • parse-server Vendorparse-community Affected >= 9.0.0 < 9.5.2-alpha.4; before 8.6.17 Fixed in 8.6.17 Patch available CNA
  • parse-server (npm) Vendor— Affected 9.0.0 to before 9.5.2-alpha.4 Fixed in 9.5.2-alpha.4 Patch available GHSA-hcj7-6gxh-24ww
  • parse-server (npm) Vendor— Affected before 8.6.17 Fixed in 8.6.17 Patch available GHSA-hcj7-6gxh-24ww

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*before 8.6.17; 9.0.0 to before 9.5.2Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:*9.5.2 alpha1Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:*9.5.2 alpha2Vulnerableparse-community
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:*9.5.2 alpha3Vulnerableparse-community
  • cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.17; 9.0.0 to before 9.5.2 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:* Versions 9.5.2 alpha1 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:* Versions 9.5.2 alpha2 Vulnerable ·parse-community
  • cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:* Versions 9.5.2 alpha3 Vulnerable ·parse-community

Remediation

  • Fix · CNA parse-server (parse-community) Fixed in 8.6.17
  • Fix · GHSA-hcj7-6gxh-24ww parse-server (npm) Fixed in 9.5.2-alpha.4 Advisory →
  • Fix · GHSA-hcj7-6gxh-24ww parse-server (npm) Fixed in 8.6.17 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30948
  2. 2026-10-03 Alias added: GHSA-hcj7-6gxh-24ww

References

Patch 1

Advisory 1

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