CVE-2021-43785: Cross Site Scripting Vulnerability in @joeattardi/emoji-button

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-26 · updated 2026-06-17
Weakness: CWE-79

Description

@joeattardi/emoji-button is a Vanilla JavaScript emoji picker component. In affected versions 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.

Affected products

joeattardi emoji-button: before 4.6.2 — fixed in 4.6.2

How to fix

Upgrade to a fixed version: joeattardi emoji-button 4.6.2. Check the vendor advisory for mitigations.

References

https://github.com/joeattardi/emoji-button/commit/05970c09180cd27fff493e998ac5bf0468b1bb16
https://github.com/joeattardi/emoji-button/commit/fe54bef107eb3f74873a4018f2ff49fa124c6a2e
https://github.com/joeattardi/emoji-button/security/advisories/GHSA-f34m-x9pj-62vq
https://github.com/joeattardi/emoji-button/commit/05970c09180cd27fff493e998ac5bf0468b1bb16
https://github.com/joeattardi/emoji-button/commit/fe54bef107eb3f74873a4018f2ff49fa124c6a2e
https://github.com/joeattardi/emoji-button/security/advisories/GHSA-f34m-x9pj-62vq

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