# CVE-2026-114490: Incorrect Authorization in hMailServer


- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 21 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-x628-2rx4-74pm

## What is CVE-2026-114490?

CVE-2026-114490 is a high-severity vulnerability in Progressive Robot Ltd hMailServer, published on 21 Oct 2026. 

### Official description

Incorrect authorization in the COM administration API of Progressive Robot hMailServer 6.3.4 through 6.3.6 allows an account assigned the serveradmin role with a list of domains - a credential an administrator may create meaning to confine it to those domains - to act as the whole-server administrator over COM. Administrator roles are meant to confine such a credential to the domains its list names, and the REST API did not take it for the server administrator, but the COM API's server-administrator check read the administer_server permission as the whole server whatever list the grant carried. So the credential signed in through the Control Panel, or through a script run on the server, as the server administrator of every domain: it could read and change every domain's accounts and mail, rename any domain, map a domain alias onto any, write the server's settings and secrets, and create further server-administrator accounts. The COM API's domain-administrator check, asked with no domain, likewise let an account assigned the domainadmin role with a list of domains that leaves out the account's own domain administer that domain's ordinary accounts over COM. An account holding serveradmin with no list is the server administrator by design and is unaffected, as are the help desk, auditor and custom roles.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2026-114490?


## How do I fix CVE-2026-114490?

No fix has been published for CVE-2026-114490 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-114490 being exploited?

There is no known exploitation of CVE-2026-114490 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-114490 and fix it if it is affected.

What it is: CVE-2026-114490 is a high-severity vulnerability in Progressive Robot Ltd hMailServer, published on 21 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-114490 in the wild and no public exploit code.

Affected product: Progressive Robot Ltd hMailServer. 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-2026-114490/ (Markdown: https://insights.sbomify.com/CVE-2026-114490/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-114490
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-114490
- OSV: https://osv.dev/vulnerability/CVE-2026-114490

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-114490/
Summaries are generated and may contain mistakes; the official description above is the record.