Medium 5.4Published Mar 10, 2026

CVE-2026-30948Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js.

Updated under an hour ago (2026-10-19 09:40 UTC)

Does this affect you?

It affects parseplatform parse-server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for parseplatform parse-server

Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

parseplatform parse-server parseplatform:parse-server	before 8.6.17; from 9.0.0 before 9.5.2; 9.5.2; 9.5.2; 9.5.2	NVD

References

https://github.com/parse-community/parse-server/releases/tag/8.6.17product, release-notes
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.4product, release-notes
https://github.com/parse-community/parse-server/security/advisories/GHSA-hcj7-6gxh-24wwmitigation, patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.