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GHSA-254j-mmc5-qhpx

Smashing Cross-site Scripting vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-35440

Packages

EcosystemPackageAffectedFixed in
RubyGems smashing < 1.3.5 1.3.5

Details

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

Smashing 1.3.4 is vulnerable to Cross Site Scripting (XSS). A URL for a widget can be crafted and used to execute JavaScript on the victim's computer. The JavaScript code can then steal data available in the session/cookies depending on the user environment (e.g. if re-using internal URL's for deploying, or cookies that are very permissive) private information may be retrieved by the attacker.

References

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