High 8.3Published Mar 10, 2026

CVE-2026-30948Parse Server has stored cross-site scripting (XSS) via SVG file upload

Updated under an hour ago (Oct 26, 2026, 10:10 PM ET)

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It affects parse-community parse-server and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for parse-community 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: 8.3 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA: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: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

parse-community parse-server parse_community:parse_server (from the name)	from 9.0.0 < 9.5.2-alpha.4; before 8.6.17	CNA record
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

References

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

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.