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GHSA-jj7c-jrv4-c65x

plone.namedfile vulnerable to Stored Cross Site Scripting with SVG images

Source: GitHub Advisory Database (reviewed) Low CVE-2023-41048

Packages

EcosystemPackageAffectedFixed in
PyPI plone.namedfile < 5.6.1 5.6.1
PyPI plone.namedfile >= 6.0.0, < 6.0.3 6.0.3
PyPI plone.namedfile >= 6.1.0, < 6.1.3 6.1.3
PyPI plone.namedfile >= 6.2.0, < 6.2.1 6.2.1

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact There is a stored cross site scripting vulnerability for SVG images. A [security hotfix from 2021](https://github.com/plone/Products.PloneHotfix20210518) already partially fixed this, by making sure SVG images are always downloaded instead of shown inline. But the same problem still exists for scales of SVG images. Note that an image tag with an SVG image as source is not vulnerable, even when the SVG image contains malicious code. To exploit the vulnerability, an attacker would first need to upload an image, and then trick a user into following a specially crafted link. All versions of `plone.namedfile` are impacted. ### Patches Patches will be released in various `plone.namedfile` releases: * 5.6.1 (for Plone 5.2) * 6.0.3 (for Plone 6.0.0-6.0.4) * 6.1.3 (for Plone 6.0.5-6.0.6) * 6.2.1 (for Plone 6.0.7) ### Workarounds There is no workaround.

References

External links from the advisory. They lead to third-party sites.