astro's client-side router has DOM Clobbering Gadget that leads to XSS
Description
The Astro web framework has a DOM Clobbering gadget in the client-side router starting in version 3.0.0 and prior to version 4.16.1. It can lead to cross-site scripting (XSS) in websites enables Astro's client-side routing and has *stored* attacker-controlled scriptless HTML elements (i.e., iframe tags with unsanitized name attributes) on the destination pages. This vulnerability can result in cross-site scripting (XSS) attacks on websites that built with Astro that enable the client-side routing with ViewTransitions and store the user-inserted scriptless HTML tags without properly sanitizing the name attributes on the page. Version 4.16.1 contains a patch for this issue.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
astronpm | >= 3.0.0, < 4.16.1 | 4.16.1 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-m85w-3h95-hcf9ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2024-47885ghsaADVISORY
- github.com/withastro/astro/blob/7814a6cad15f06931f963580176d9b38aa7819f2/packages/astro/src/transitions/router.tsghsax_refsource_MISCWEB
- github.com/withastro/astro/commit/a4ffbfaa5cb460c12bd486fd75e36147f51d3e5eghsax_refsource_MISCWEB
- github.com/withastro/astro/security/advisories/GHSA-m85w-3h95-hcf9ghsax_refsource_CONFIRMWEB
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