{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27212","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-02-18T19:47:02.156Z","datePublished":"2026-02-21T05:43:07.072Z","dateUpdated":"2026-02-24T18:53:04.131Z"},"containers":{"cna":{"title":"Swiper has a Prototype Pollution Vulnerability","problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","baseScore":9.4,"baseSeverity":"CRITICAL","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/nolimits4web/swiper/security/advisories/GHSA-hmx5-qpq5-p643","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nolimits4web/swiper/security/advisories/GHSA-hmx5-qpq5-p643"},{"name":"https://github.com/nolimits4web/swiper/commit/d3e663322a13043ca63aaba235d8cf3900e0c8cf","tags":["x_refsource_MISC"],"url":"https://github.com/nolimits4web/swiper/commit/d3e663322a13043ca63aaba235d8cf3900e0c8cf"},{"name":"https://github.com/nolimits4web/swiper/releases/tag/v12.1.2","tags":["x_refsource_MISC"],"url":"https://github.com/nolimits4web/swiper/releases/tag/v12.1.2"}],"affected":[{"vendor":"nolimits4web","product":"swiper","versions":[{"version":">= 6.5.1, < 12.1.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-02-21T05:43:07.072Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-hmx5-qpq5-p643","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-24T18:52:46.035771Z","id":"CVE-2026-27212","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-24T18:53:04.131Z"}}]}}