# CleverTap Web SDK vulnerabilities

Source: https://junglewise.ai/threats/technologies/web-sdk  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/web-sdk.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in CleverTap Web SDK: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2025-51684, was published on 30 July 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (0 critical, 0 exploited in the wild)

## About CleverTap Web SDK

The CleverTap Web SDK is a library that enables web applications to integrate with the CleverTap customer engagement platform.

## Latest CleverTap Web SDK vulnerabilities

- [CVE-2025-51684: CleverTap Web SDK DOM XSS via postMessage in renderCustomHtml](https://junglewise.ai/threats/cve-2025-51684-clevertap-web-sdk-dom-xss-via-postmessage-in-rendercustomhtml) (info, published 30 Jul 2026)
- [CVE-2026-26862: CleverTap Web SDK DOM-based XSS via postMessage origin bypass](https://junglewise.ai/threats/cve-2026-26862-clevertap-web-sdk-dom-based-xss-via-postmessage-origin-bypass) (low, CVSS 3.1, published 27 Feb 2026)
- [CVE-2026-26861: CleverTap Web SDK DOM-based XSS in postMessage handler](https://junglewise.ai/threats/cve-2026-26861-clevertap-web-sdk-dom-based-xss-in-postmessage-handler) (low, CVSS 3.1, published 27 Feb 2026)

## Most severe CleverTap Web SDK vulnerabilities

- [CVE-2026-26862: CleverTap Web SDK DOM-based XSS via postMessage origin bypass](https://junglewise.ai/threats/cve-2026-26862-clevertap-web-sdk-dom-based-xss-via-postmessage-origin-bypass) (low, CVSS 3.1, published 27 Feb 2026)
- [CVE-2026-26861: CleverTap Web SDK DOM-based XSS in postMessage handler](https://junglewise.ai/threats/cve-2026-26861-clevertap-web-sdk-dom-based-xss-in-postmessage-handler) (low, CVSS 3.1, published 27 Feb 2026)
- [CVE-2025-51684: CleverTap Web SDK DOM XSS via postMessage in renderCustomHtml](https://junglewise.ai/threats/cve-2025-51684-clevertap-web-sdk-dom-xss-via-postmessage-in-rendercustomhtml) (info, published 30 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "CleverTap Web SDK vulnerabilities", https://junglewise.ai/threats/technologies/web-sdk, 9 November 2026.