CVE-2021-43785: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

November 26, 2021 (updated November 30, 2021)

@joeattardi/emoji-button is a Vanilla JavaScript emoji picker component. There are two vectors for XSS attacks, a URL for a custom emoji, and an i18n string. In both of these cases, a value can be crafted such that it can insert a script tag into the page and execute malicious code.

References

github.com/joeattardi/emoji-button/commit/05970c09180cd27fff493e998ac5bf0468b1bb16
github.com/joeattardi/emoji-button/commit/fe54bef107eb3f74873a4018f2ff49fa124c6a2e
github.com/joeattardi/emoji-button/security/advisories/GHSA-f34m-x9pj-62vq
nvd.nist.gov/vuln/detail/CVE-2021-43785

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