# CVE-2026-109205: LogicalDOC Community Edition through 9.3 Unauthenticated Upload Disk Exhaustion via UploadServlet

> Remote attackers can exhaust server disk space by repeatedly uploading files via the unauthenticated UploadServlet, causing denial of service.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Oct 2026
- **Updated:** 14 Oct 2026
- **Also known as:** GHSA-528h-c74g-p276

## What is CVE-2026-109205?

CVE-2026-109205 is a high-severity denial of service vulnerability in LogicalDOC Community Edition, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

LogicalDOC Community Edition through 9.3 contains an unauthenticated file upload vulnerability in the UploadServlet that allows remote attackers to write files to disk without a session. Attackers can repeatedly send multipart requests with unlimited file parts to /upload, persisting files in uncleaned temporary directories and exhausting server disk space.

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

## Which versions are affected by CVE-2026-109205?


## How do I fix CVE-2026-109205?

No fix has been published for CVE-2026-109205 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-109205 being exploited?

There is no known exploitation of CVE-2026-109205 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-109205 and fix it if it is affected.

What it is: CVE-2026-109205 is a high-severity denial of service vulnerability in LogicalDOC Community Edition, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-109205 in the wild and no public exploit code.

Affected product: LogicalDOC Community Edition. 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-2026-109205/ (Markdown: https://insights.sbomify.com/CVE-2026-109205/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-109205
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-109205
- OSV: https://osv.dev/vulnerability/CVE-2026-109205

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-109205/
Summaries are generated and may contain mistakes; the official description above is the record.