Payload: Bypassed sanitization of user uploaded SVGs
## Impact A malicious SVG file upload could bypass sanitization, be stored, and execute attacker-controlled JavaScript (XSS) after a user downloads it and opens it. **You are affected if:** - You have a collection configured to upload and allow SVG files which can then be downloaded by users. ## Patches The fix validates SVG content on every upload path and hardens SVG/XML delivery so stored SVGs cannot frame attacker content. Users should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`. ## Workarounds Disallow SVG uploads, or serve uploaded SVGs as downloads with Content-Disposition: attachment and a strict CSP. These mitigations reduce exposure but do not replace upgrading when the patched release is available.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-105862US | — | — | ||
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a collection that allows downloadable SV… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/payloadcms/payloadPACKAGE
- https://github.com/payloadcms/payload/commit/a8c3a8e8e2680c96ec4f66f5b3854c5df6c35adfWEB
- https://github.com/payloadcms/payload/releases/tag/v3.90.0WEB
- https://github.com/payloadcms/payload/security/advisories/GHSA-2pwp-2369-8fg3WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-105862ADVISORY
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