npm package report

Is clevertap-web-sdk safe?

2 known vulnerabilities, worst severity HIGH.

cvss
8.3

how bad it is if exploited, out of 10

epss
0.20%

chance of exploitation in the next 30 days

xyz score
3.3

CyberXYZ composite, out of 10

fig. 01 — GHSA-j5mf-6rh3-rhgg, the advisory selected below

// advisories

GHSA-j5mf-6rh3-rhgg

HIGHCVE-2026-26861

CleverTap Web SDK version 1.15.2 and earlier is vulnerable to Cross-site Scripting (XSS) via window.postMessage. The handleCustomHtmlPreviewPostMessageEvent function in src/util/campaignRender/nativeDisplay.js performs insufficient origin validation using the includes() method, which can be bypassed by an attacker using a subdomain.

Affected
< 1.15.3
Fixed in
1.15.3
Weakness
CWE-79
Published
2026-02-27
Source
github

GHSANVDMITREreferencereferencereferencereference

// dependencies

0 direct

Sign in for dependency paths and remediation

// ai model usage

Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.

Checked 2026-09-22 at 00:43 UTC. The most recent advisory here was published 2026-02-27. Updated continuously from NVD, GHSA, OSV and CNA feeds.

Think a verdict here is wrong? Tell us — we respond within 2 business days.
Is clevertap-web-sdk safe? npm package security report | CyberXYZ