# CVE-2026-30795: RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure

> RustDesk client accepts invalid TLS certificates, allowing attackers to intercept sensitive data via man-in-the-middle attacks.

- **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
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Mar 2026
- **Updated:** 17 Mar 2026
- **Also known as:** GHSA-c9v6-fhff-767p

## What is CVE-2026-30795?

CVE-2026-30795 is a high-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cleartext Transmission of Sensitive Information vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Heartbeat sync loop modules) allows Sniffing Attacks. This vulnerability is associated with program files src/hbbs_http/sync.Rs and program routines Heartbeat JSON payload construction (preset-address-book-password).

This issue affects RustDesk Client: through 1.4.5.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2026-30795?

It affects 1 product.


Products: Rustdesk Rustdesk.

## How do I fix CVE-2026-30795?

No fix has been published for CVE-2026-30795 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30795 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30795 exists.

## 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-2026-30791](https://insights.sbomify.com/CVE-2026-30791/): RustDesk Client Accepts Pseudo-Encrypted Config Strings Without Cryptographic Validation (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-2026-30795 and fix it if it is affected.

What it is: CVE-2026-30795 is a high-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30795 exists.

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-2026-30795/ (Markdown: https://insights.sbomify.com/CVE-2026-30795/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30795
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30795
- OSV: https://osv.dev/vulnerability/CVE-2026-30795

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-30795/
Summaries are generated and may contain mistakes; the official description above is the record.