CVE-2026-26861
1 advisory.
npm/clevertap-web-sdk CVE-2026-26861: high 8.3, EPSS 0.23%
CleverTap Web SDK is vulnerable to DOM-based XSS via handleCustomHtmlPreviewPostMessageEvent function
Action: Upgrade clevertap-web-sdk to 1.15.3 or later.
npm i clevertap-web-sdk@1.15.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.15.3 | - |
Fixed versions
| 1.15.3 |
Sources
- osv: GHSA-j5mf-6rh3-rhgg
- https://nvd.nist.gov/vuln/detail/CVE-2026-26861
- https://github.com/CleverTap/clevertap-web-sdk/issues/424
- https://github.com/CleverTap/clevertap-web-sdk/pull/417
- https://github.com/CleverTap/clevertap-web-sdk/commit/84695b726a751614ddc3a4f71382c239c5833e03
- https://github.com/CleverTap/clevertap-web-sdk
- https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/util/campaignRender/nativeDisplay.js#L118-L121
CVE-2026-26861 · published · modified · JSON