Prototype Pollution in swiper

CRITICAL 9.8CVE-2021-23370 · GHSA-p3hc-fv2j-rp68 · Published 12/04/2021 · updated 17/06/2026

In short

CVE-2021-23370 is a CRITICAL (CVSS 9.8) vulnerability affecting swiper (swiperjs), swiper.
Chance of exploitation in the next 30 days (EPSS): 2.2%, higher than 82.6% of all vulnerabilities.
Fix: update to 6.5.1 or later.

Package	Affected versions	Patched versions
swiper swiperjs	`< 6.5.1`	`6.5.1`
swiper npm	`< 6.5.1`	`6.5.1`

Versions of the package swiper before 6.5.1 are susceptible to prototype pollution.

NVD description

This affects the package swiper before 6.5.1.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

< 6.5.1

6.5.1

npm

< 6.5.1

6.5.1

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