# CVE-2025-62320: HTML Injection Leading to Data Exfiltration to External Server vulnerability affects HCL Unica Platform

> Attackers can inject HTML to trigger external requests, potentially exfiltrating user data from HCL Unica Platform.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Mar 2026
- **Updated:** 17 Mar 2026
- **Also known as:** GHSA-mmv4-545x-g5fr

## What is CVE-2025-62320?

CVE-2025-62320 is a medium-severity cross-site scripting vulnerability in HCL Sametime, published on 17 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

HTML Injection can be carried out in Product when a web application does not properly check or clean user input before showing it on a webpage. Because of this, an attacker may insert unwanted HTML code into the page. When the browser loads the page, it may automatically interact with external resources included in that HTML, which can cause unexpected requests from the user’s browser.

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

## Which versions are affected by CVE-2025-62320?

It affects 9 products.


Products: Hcltech Unica, Hcltech Unica Audience Central, Hcltech Unica Campaign, Hcltech Unica Centralised Offer Management, Hcltech Unica Contact Central, Hcltech Unica Interact, Hcltech Unica Journey, Hcltech Unica Plan, Hcltech Unica Segment Central.

## How do I fix CVE-2025-62320?

No fix has been published for CVE-2025-62320 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-62320 being exploited?

There is no known exploitation of CVE-2025-62320 in the wild and no public exploit code.

## Other vulnerabilities in HCL Sametime

- [CVE-2025-62319](https://insights.sbomify.com/CVE-2025-62319/): Boolean-Based SQL Injection in Multiple Unica Components (critical 9.8)
- [CVE-2023-37497](https://insights.sbomify.com/CVE-2023-37497/): An XML External Entity (XXE) Injection Vulnerability affects HCL Unica Platform (high 8.1)
- [CVE-2023-37498](https://insights.sbomify.com/CVE-2023-37498/): HCL Unica Platform is vulnerable to a privilege escalation by unauthorized group assignation (high 8.1)
- [CVE-2023-37499](https://insights.sbomify.com/CVE-2023-37499/): A Persistent Cross-site Scripting (XSS) vulnerability affects HCL Unica Platform (high 8.1)
- [CVE-2023-37500](https://insights.sbomify.com/CVE-2023-37500/): A Persistent Cross-site Scripting (XSS) vulnerability affects HCL Unica Platform (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-62320 and fix it if it is affected.

What it is: CVE-2025-62320 is a medium-severity cross-site scripting vulnerability in HCL Sametime, published on 17 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-62320 in the wild and no public exploit code.

Affected product: HCL Sametime. 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-2025-62320/ (Markdown: https://insights.sbomify.com/CVE-2025-62320/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-62320
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-62320
- OSV: https://osv.dev/vulnerability/CVE-2025-62320

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-62320/
Summaries are generated and may contain mistakes; the official description above is the record.