# CVE-2026-78321: DJI Drone HTTP Media Server Denial of Service via Connection Pool Exhaustion

> An attacker on the internal network can exhaust the drone's HTTP media server connection pool, causing a denial of service that blocks media retrieval.

- **Severity:** Medium 6.0 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2026
- **Updated:** 24 Aug 2026
- **Also known as:** GHSA-478p-8v46-gwpv

## What is CVE-2026-78321?

CVE-2026-78321 is a medium-severity denial of service vulnerability in DJI Air 3, published on 24 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The HTTP media server on DJI drones does not enforce sufficient limits on incoming connections or request rates. An attacker with access to the drone's internal network can exhaust the server's connection pool by repeatedly requesting a stored media file, preventing the server from handling legitimate requests and causing a denial of service that prevents the DJI Fly application from retrieving photos and videos from the aircraft in QuickTransfer mode.

Affected models are DJI Neo until 01.00.0400, DJI Neo 2 until 01.00.0500, DJI Flip until 01.00.1200, DJI Air 3 until 01.00.1600, DJI Air 3S until 01.00.1400, DJI Avata 2 until 01.00.0400, DJI Avata 360 until 01.00.0300, DJI Mavic 3 until 01.00.1400, DJI Mavic 3 Classic until 01.00.0800, DJI Mavic 3 Pro until 01.01.0700, DJI Mavic 4 Pro until 01.00.0500, DJI Mini 2 until 01.07.0200, DJI Mini 3 until 01.00.0500, DJI Mini 3 Pro until 01.00.0900, DJI Mini 4 Pro until 01.00.1100, and DJI Mini 5 Pro until 01.00.0600.

Remediation requires a firmware update from the vendor.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-78321?


## How do I fix CVE-2026-78321?

No fix has been published for CVE-2026-78321 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78321 being exploited?

There is no known exploitation of CVE-2026-78321 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78321 and fix it if it is affected.

What it is: CVE-2026-78321 is a medium-severity denial of service vulnerability in DJI Air 3, published on 24 Aug 2026. 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-2026-78321 in the wild and no public exploit code.

Affected product: DJI Air 3. 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-2026-78321/ (Markdown: https://insights.sbomify.com/CVE-2026-78321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78321
- OSV: https://osv.dev/vulnerability/CVE-2026-78321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78321/
Summaries are generated and may contain mistakes; the official description above is the record.