# CVE-2026-34852: Denial of service in HarmonyOS

> A stack overflow in the HarmonyOS media platform allows attackers to cause a denial of service, affecting system availability.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Apr 2026
- **Updated:** 13 Apr 2026
- **Also known as:** GHSA-7qf2-g97r-ch8v

## What is CVE-2026-34852?

CVE-2026-34852 is a medium-severity denial of service vulnerability in Huawei Harmonyos, published on 13 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Stack overflow vulnerability in the media platform.
Impact: Successful exploitation of this vulnerability may affect availability.

Weakness: CWE-835 (Loop with Unreachable Exit Condition)

## Which versions are affected by CVE-2026-34852?

It affects 1 product.


Products: Huawei Harmonyos.

## How do I fix CVE-2026-34852?

No fix has been published for CVE-2026-34852 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-34852 being exploited?

There is no known exploitation of CVE-2026-34852 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Harmonyos

- [CVE-2026-34865](https://insights.sbomify.com/CVE-2026-34865/): Memory corruption in HarmonyOS (critical 10.0)
- [CVE-2023-34157](https://insights.sbomify.com/CVE-2023-34157/): Other in HarmonyOS (critical 10.0)
- [CVE-2023-41294](https://insights.sbomify.com/CVE-2023-41294/): Denial of service in HarmonyOS (critical 9.8)
- [CVE-2022-48478](https://insights.sbomify.com/CVE-2022-48478/): Denial of service in HarmonyOS (critical 9.8)
- [CVE-2022-48479](https://insights.sbomify.com/CVE-2022-48479/): Memory corruption in HarmonyOS (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34852 and fix it if it is affected.

What it is: CVE-2026-34852 is a medium-severity denial of service vulnerability in Huawei Harmonyos, published on 13 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-34852 in the wild and no public exploit code.

Affected product: Huawei Harmonyos. 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-2026-34852/ (Markdown: https://insights.sbomify.com/CVE-2026-34852/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34852
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34852
- OSV: https://osv.dev/vulnerability/CVE-2026-34852

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34852/
Summaries are generated and may contain mistakes; the official description above is the record.