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CVE-2026-27212 PUBLISHED CVSS 9.399999618530273 CRITICAL

Swiper is a free and mobile touch slider with hardware accelerated transitions and native behavior. Versions 6.5.1 through 12.1.1 have a Prototype pollution vulnerability. The vulnerability resides in line 94 of shared/utils.mjs, where the indexOf() function is used to check whether user provided input contain forbidden strings. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using Array.prototype. The exploit works across Windows and Linux and on Node and Bun runtimes. Any application that processes attacker-controlled input using this package may be affected by the following: Authentication Bypass, Denial of Service and RCE. This issue is fixed in version 12.1.2.

EPSS 0.07% · 20.7th percentile

Risk Scores

CVSS v4.0
9.399999618530273
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS Score
0.07%
20.7th percentile

Affected Products

VendorProductVersions
nolimits4webswiper>= 6.5.1, < 12.1.2
npmswiper6.5.1
swiperjsswiper6.5.1

Timeline

References

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