Saleor up to 3.20.107/3.21.42/3.22.26 SVG File cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in Saleor up to 3.20.107/3.21.42/3.22.26. This impacts an unknown function of the component SVG File Handler. This manipulation causes cross site scripting. This vulnerability is handled as CVE-2026-23499. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Saleor up to 3.20.107/3.21.42/3.22.26. It has been declared as problematic. Affected by this vulnerability is an unknown code of the component SVG File Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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';`.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-23499 since 01/13/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 3.20.108, 3.21.43 or 3.22.27 eliminates this vulnerability. Applying the patch 77f7927a0db9a216440df92c51012136f13e1d99 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-3775). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Saleor

Version

• 3.20.107
• 3.21.0
• 3.21.1
• 3.21.2
• 3.21.3
• 3.21.4
• 3.21.5
• 3.21.6
• 3.21.7
• 3.21.8
• 3.21.9
• 3.21.10
• 3.21.11
• 3.21.12
• 3.21.13
• 3.21.14
• 3.21.15
• 3.21.16
• 3.21.17
• 3.21.18
• 3.21.19
• 3.21.20
• 3.21.21
• 3.21.22
• 3.21.23
• 3.21.24
• 3.21.25
• 3.21.26
• 3.21.27
• 3.21.28
• 3.21.29
• 3.21.30
• 3.21.31
• 3.21.32
• 3.21.33
• 3.21.34
• 3.21.35
• 3.21.36
• 3.21.37
• 3.21.38
• 3.21.39
• 3.21.40
• 3.21.41
• 3.21.42
• 3.22.0
• 3.22.1
• 3.22.2
• 3.22.3
• 3.22.4
• 3.22.5
• 3.22.6
• 3.22.7
• 3.22.8
• 3.22.9
• 3.22.10
• 3.22.11
• 3.22.12
• 3.22.13
• 3.22.14
• 3.22.15
• 3.22.16
• 3.22.17
• 3.22.18
• 3.22.19
• 3.22.20
• 3.22.21
• 3.22.22
• 3.22.23
• 3.22.24
• 3.22.25
• 3.22.26

License

• open-source

Website

• Product: https://github.com/saleor/saleor/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion