# CVE-2026-32852: MailEnable < 10.55 Reflected XSS via FreeBusy.aspx StartDate Parameter

> Remote attackers can execute arbitrary JavaScript in victims' browsers via a malicious URL in the MailEnable webmail interface.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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:** 23 Mar 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-cwm4-pqjw-r7wj

## What is CVE-2026-32852?

CVE-2026-32852 is a medium-severity cross-site scripting vulnerability in Mailenable Mailenable, published on 23 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

MailEnable versions prior to 10.55 contain a reflected cross-site scripting vulnerability in the webmail interface that allows remote attackers to execute arbitrary JavaScript in a victim's browser by crafting a malicious URL. Attackers can inject malicious code through the StartDate parameter in the FreeBusy.aspx form, which is not properly sanitized before being embedded into dynamically generated JavaScript.

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

## Which versions are affected by CVE-2026-32852?

It affects 1 product.


Products: Mailenable Mailenable.

## How do I fix CVE-2026-32852?

No fix has been published for CVE-2026-32852 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-32852 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32852 exists.

## Other vulnerabilities in Mailenable Mailenable

- [CVE-2015-9280](https://insights.sbomify.com/CVE-2015-9280/): XML external entity in n/a (critical 10.0)
- [CVE-2025-44148](https://insights.sbomify.com/CVE-2025-44148/): Cross-site scripting in n/a (critical 9.8)
- [CVE-2019-12924](https://insights.sbomify.com/CVE-2019-12924/): XML external entity in n/a (critical 9.8)
- [CVE-2015-9278](https://insights.sbomify.com/CVE-2015-9278/): MailEnable before 8.60 allows Privilege Escalation because admin accounts could be created as a consequence of %0A mishandling in AUTH.TAB a (critical 9.8)
- [CVE-2015-9277](https://insights.sbomify.com/CVE-2015-9277/): Path traversal in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-32852 and fix it if it is affected.

What it is: CVE-2026-32852 is a medium-severity cross-site scripting vulnerability in Mailenable Mailenable, published on 23 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32852 exists.

Affected product: Mailenable Mailenable. 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-2026-32852/ (Markdown: https://insights.sbomify.com/CVE-2026-32852/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-32852
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-32852
- OSV: https://osv.dev/vulnerability/CVE-2026-32852

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-32852/
Summaries are generated and may contain mistakes; the official description above is the record.