# CVE-2026-12755: Server-side request forgery in Server

> An authenticated user can force the server to authenticate to an attacker-controlled host, exposing PAM provider credentials via NTLMv2 challenge-response.

- **Severity:** Low 2.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Jun 2026
- **Updated:** 25 Jun 2026
- **Also known as:** GHSA-6vpw-rmvh-qc2w

## What is CVE-2026-12755?

CVE-2026-12755 is a low-severity server-side request forgery vulnerability in Devolutions Devolutions Server, published on 25 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Improper input validation in the PAM AD discovery endpoints in 
Devolutions Server 2026.2.4.0 through 2026.2.7.0 allows an authenticated
 user with the UserGroupsView permission to coerce server-side 
authentication to an attacker-controlled host, exposing PAM provider 
credentials as a NTLMv2 challenge-response, via a crafted DomainName 
parameter.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2026-12755?

It affects 1 product.


Products: Devolutions Devolutions Server.

## How do I fix CVE-2026-12755?

No fix has been published for CVE-2026-12755 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12755 being exploited?

There is no known exploitation of CVE-2026-12755 in the wild and no public exploit code.

## Other vulnerabilities in Devolutions Devolutions Server

- [CVE-2026-3130](https://insights.sbomify.com/CVE-2026-3130/): Business logic in Server (critical 9.8)
- [CVE-2026-3204](https://insights.sbomify.com/CVE-2026-3204/): Cross-site scripting in Server (critical 9.8)
- [CVE-2026-3224](https://insights.sbomify.com/CVE-2026-3224/): Auth bypass in Server (critical 9.8)
- [CVE-2026-0610](https://insights.sbomify.com/CVE-2026-0610/): SQL injection in Server (critical 9.8)
- [CVE-2024-2921](https://insights.sbomify.com/CVE-2024-2921/): Missing authorization in Server (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12755 and fix it if it is affected.

What it is: CVE-2026-12755 is a low-severity server-side request forgery vulnerability in Devolutions Devolutions Server, published on 25 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-12755 in the wild and no public exploit code.

Affected product: Devolutions Devolutions Server. 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-2026-12755/ (Markdown: https://insights.sbomify.com/CVE-2026-12755/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12755
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12755
- OSV: https://osv.dev/vulnerability/CVE-2026-12755

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12755/
Summaries are generated and may contain mistakes; the official description above is the record.