# CVE-2026-7795: Click to Chat <= 4.39 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'num' Shortcode Parameter

> Authenticated attackers can inject arbitrary scripts via the shortcode parameter, executing code when users interact with the chat widget.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jun 2026
- **Updated:** 6 Jun 2026
- **Also known as:** GHSA-gw8m-44wf-cqjf

## What is CVE-2026-7795?

CVE-2026-7795 is a medium-severity cross-site scripting vulnerability in Click to Chat – HoliThemes, published on 6 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Click to Chat – WA Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [chat] shortcode 'num' parameter in all versions up to, and including, 4.38. This is due to insufficient escaping when embedding user-supplied shortcode attribute values inside JavaScript string literals that are then placed in HTML event-handler attributes. The CCW_Shortcode::shortcode() function applies esc_attr() to the 'num' parameter (line 157), which converts single quotes to the HTML entity &#039;. This entity-encoded value is then interpolated directly into a JavaScript window.open() call string delimited by single quotes (line 194/221), and that complete string is placed verbatim into an HTML onclick attribute in the style template files (e.g., sc-style-1.php line 6). Because browsers HTML-decode event attribute values before executing the embedded JavaScript, the &#039; entities are decoded back to literal single quotes at runtime, allowing the injected payload to break out of the JavaScript string context and execute arbitrary code. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into pages that will execute whenever a user clicks the WhatsApp chat button rendered by the [chat] shortcode.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-7795?


## How do I fix CVE-2026-7795?

No fix has been published for CVE-2026-7795 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7795 being exploited?

There is no known exploitation of CVE-2026-7795 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7795 and fix it if it is affected.

What it is: CVE-2026-7795 is a medium-severity cross-site scripting vulnerability in Click to Chat – HoliThemes, published on 6 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-7795 in the wild and no public exploit code.

Affected product: Click to Chat – HoliThemes. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-7795/ (Markdown: https://insights.sbomify.com/CVE-2026-7795/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7795
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7795
- OSV: https://osv.dev/vulnerability/CVE-2026-7795

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-7795/
Summaries are generated and may contain mistakes; the official description above is the record.