# CVE-2024-1900: Auth bypass in Server

> Authenticated users retain access after being disabled or deleted in the identity provider until token expiration, bypassing intended access controls.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Mar 2024
- **Updated:** 1 Nov 2024
- **Also known as:** GHSA-m3gq-f9rc-qmwx

## What is CVE-2024-1900?

CVE-2024-1900 is a medium-severity authentication bypass vulnerability in Devolutions Devolutions Server, published on 5 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper session management in the identity provider authentication flow in Devolutions Server 2023.3.14.0 and earlier allows an authenticated user via an identity provider to stay authenticated after his user is disabled or deleted in the identity provider such as Okta or Microsoft O365. 

The user will stay authenticated until the Devolutions Server token expiration.

Weakness: CWE-613 (DEPRECATED: Insufficient Session Expiration)

## Which versions are affected by CVE-2024-1900?

It affects 1 product.


Products: Devolutions Devolutions Server.

## How do I fix CVE-2024-1900?

No fix has been published for CVE-2024-1900 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-1900 being exploited?

There is no known exploitation of CVE-2024-1900 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-2024-1900 and fix it if it is affected.

What it is: CVE-2024-1900 is a medium-severity authentication bypass vulnerability in Devolutions Devolutions Server, published on 5 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-1900 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-2024-1900/ (Markdown: https://insights.sbomify.com/CVE-2024-1900/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-1900
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-1900
- OSV: https://osv.dev/vulnerability/CVE-2024-1900

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-1900/
Summaries are generated and may contain mistakes; the official description above is the record.