# CVE-2026-30791: RustDesk Client Accepts Pseudo-Encrypted Config Strings Without Cryptographic Validation


- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 5 Mar 2026
- **Updated:** 6 Mar 2026
- **Also known as:** GHSA-mpxj-6c39-w4rr

## What is CVE-2026-30791?

CVE-2026-30791 is a high-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. 

### Official description

Use of a Broken or Risky Cryptographic Algorithm vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, WebClient (Config import, URI scheme handler, CLI --config modules) allows Retrieve Embedded Sensitive Data. This vulnerability is associated with program files flutter/lib/common.Dart, hbb_common/src/config.Rs and program routines parseRustdeskUri(), importConfig().

This issue affects RustDesk Client: through 1.4.5.

Weakness: CWE-684 (Incorrect Provision of Specified Functionality), CWE-327 (Use of a Broken or Risky Cryptographic Algorithm)

## Which versions are affected by CVE-2026-30791?

It affects 1 product.


Products: Rustdesk Rustdesk.

## How do I fix CVE-2026-30791?

No fix has been published for CVE-2026-30791 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30791 being exploited?

There is no known exploitation of CVE-2026-30791 in the wild and no public exploit code.

## Other vulnerabilities in rustdesk-client RustDesk Client

- [CVE-2024-25140](https://insights.sbomify.com/CVE-2024-25140/): Misconfiguration in n/a (critical 9.8)
- [CVE-2026-30793](https://insights.sbomify.com/CVE-2026-30793/): RustDesk Flutter URI Handler Sets Permanent Password Without Privilege Check or User Confirmation (critical 9.3)
- [CVE-2026-30797](https://insights.sbomify.com/CVE-2026-30797/): RustDesk rustdesk://config/ URI Silently Re-homes Client to Attacker-Controlled Server (critical 9.3)
- [CVE-2026-30795](https://insights.sbomify.com/CVE-2026-30795/): RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure (high 8.7)
- [CVE-2026-30792](https://insights.sbomify.com/CVE-2026-30792/): RustDesk Client Blindly Merges Unauthenticated Strategy Payloads, Bypassing Local Security Settings (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30791 and fix it if it is affected.

What it is: CVE-2026-30791 is a high-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. 
Exploitation: There is no known exploitation of CVE-2026-30791 in the wild and no public exploit code.

Affected product: rustdesk-client RustDesk Client. 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-2026-30791/ (Markdown: https://insights.sbomify.com/CVE-2026-30791/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30791
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30791
- OSV: https://osv.dev/vulnerability/CVE-2026-30791

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30791/
Summaries are generated and may contain mistakes; the official description above is the record.