Vulnerability · Published Jan 21, 2026 · Assigned by GitHub_M
CVE-2026-23499Saleor vulnerable to stored XSS via Unrestricted File Upload
High 8.5
In plain English
A high-severity cross-site scripting in saleor from saleor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
Saleor is an e-commerce platform. Starting in version 3.0.0 and prior to versions 3.20.108, 3.21.43, and 3.22.27, Saleor allowed authenticated staff users or Apps to upload arbitrary files, including malicious HTML and SVG files containing Javascript. Depending on the deployment strategy, these files may be served from the same domain as the dashboard without any restrictions leading to the execution of malicious scripts in the context of the user's browser. Malicious staff members could craft script injections to target other staff members, possibly stealing their access and/or refresh tokens. Users are vulnerable if they host the media files inside the same domain as the dashboard, e.g., dashboard is at `example.com/dashboard/` and media are under `example.com/media/`. They are not impact if media files are hosted in a different domain, e.g., `media.example.com`. Users are impacted if they do not return a `Content-Disposition: attachment` header for the media files. Saleor Cloud users are not impacted. This issue has been patched in versions: 3.22.27, 3.21.43, and 3.20.108. Some workarounds are available for those unable to upgrade. Configure the servers hosting the media files (e.g., CDN or reverse proxy) to return the Content-Disposition: attachment header. This instructs browsers to download the file instead of rendering them in the browser. Prevent the servers from returning HTML and SVG files. Set-up a `Content-Security-Policy` for media files, such as `Content-Security-Policy: default-src 'none'; base-uri 'none'; frame-ancestors 'none'; form-action 'none';`.
Affected products (as reported)
Weakness: CWE-79, CWE-434 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/saleor/saleor/security/advisories/GHSA-666h-2p49-pg95 x_refsource_CONFIRM
- https://github.com/saleor/saleor/commit/77f7927a0db9a216440df92c51012136f13e1d99 x_refsource_MISC
- https://github.com/saleor/saleor/commit/7d33efc7a06252320cd51cbb20c2e308aed2fd10 x_refsource_MISC
- https://github.com/saleor/saleor/commit/9110eba68c3f73afa1f72b45bd9b1394c752d335 x_refsource_MISC
- https://github.com/saleor/saleor/commit/ac6936a336289c77398ef600cad3498ad4ba261c x_refsource_MISC
- https://github.com/saleor/saleor/commit/b3cb27b3fe96dae3c879063e56d32a9398eabd24 x_refsource_MISC
- https://docs.saleor.io/security/#restricted-file-uploads x_refsource_MISC