ADVISORIES

• CVE-2021-35440 (NVD)
• GHSA-254j-mmc5-qhpx
• Vendor Advisory

GEM

smashing

SEVERITY

CVSS v3.x: 6.1 (Medium)

PATCHED VERSIONS

• >= 1.3.5

DESCRIPTION

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.

RELATED

• https://github.com/Smashing/smashing/blob/ad7325f159f89854ca4e7d94e7be9bee507b6d46/CHANGELOG.md