# CVE-2025-0276: HCL BigFix Modern Client Management (MCM) is affected by an insecure Content Security Policy (CSP)

> Insecure Content Security Policy in HCL BigFix MCM allows attackers to execute scripts or trick users via cross-site scripting.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Oct 2025
- **Updated:** 16 Oct 2025
- **Also known as:** GHSA-mchx-c3f3-4j52

## What is CVE-2025-0276?

CVE-2025-0276 is a medium-severity cross-site scripting vulnerability in HCL Software BigFix Modern Client Management, published on 16 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

HCL BigFix Modern Client Management (MCM) 3.3 and earlier are vulnerable to certain insecure directives within the Content Security Policy (CSP).  An attacker could trick users into performing actions by not properly restricting the sources of scripts and other content.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page), CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-693 (Protection Mechanism Failure)

## Which versions are affected by CVE-2025-0276?

It affects 2 products.


Products: Hcltech Bigfix Mobile, Hcltech Bigfix Modern Client Management.

## How do I fix CVE-2025-0276?

No fix has been published for CVE-2025-0276 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-0276 being exploited?

There is no known exploitation of CVE-2025-0276 in the wild and no public exploit code.

## Other vulnerabilities in HCL Software BigFix Modern Client Management

- [CVE-2021-27783](https://insights.sbomify.com/CVE-2021-27783/): HCL BigFix Mobile / Modern Client Management is vulnerable to sensitive information exposure (medium 6.8)
- [CVE-2023-28014](https://insights.sbomify.com/CVE-2023-28014/): HCL BigFix Mobile can be affected by a cross-site scripting (XSS) vulnerability (medium 6.6)
- [CVE-2021-27781](https://insights.sbomify.com/CVE-2021-27781/): HCL BigFix Mobile / Modern Client Management is vulnerable to stored cross-site scripting (medium 6.6)
- [CVE-2025-0277](https://insights.sbomify.com/CVE-2025-0277/): HCL BigFix Mobile is affected by an insecure Content Security Policy (CSP) (medium 6.5)
- [CVE-2023-28012](https://insights.sbomify.com/CVE-2023-28012/): HCL BigFix Mobile can be affected by a command injection vulnerability (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-0276 and fix it if it is affected.

What it is: CVE-2025-0276 is a medium-severity cross-site scripting vulnerability in HCL Software BigFix Modern Client Management, published on 16 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-0276 in the wild and no public exploit code.

Affected product: HCL Software BigFix Modern Client Management. 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-2025-0276/ (Markdown: https://insights.sbomify.com/CVE-2025-0276/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-0276
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-0276
- OSV: https://osv.dev/vulnerability/CVE-2025-0276

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-0276/
Summaries are generated and may contain mistakes; the official description above is the record.