# CVE-2026-73244: kkFileView: Unauthenticated path traversal in POST /listFiles allows arbitrary directory listing

> Unauthenticated attackers can list arbitrary directories via the /listFiles endpoint, exposing file system structure.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 13 Aug 2026
- **Also known as:** GHSA-pmp8-g8p2-p6jq

## What is CVE-2026-73244?

CVE-2026-73244 is a medium-severity path traversal vulnerability in kekingcn kkFileView, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated POST /listFiles endpoint in server/src/main/java/cn/keking/web/controller/FileController.java passes the user-controlled path parameter from FileController#getFiles to Files.newDirectoryStream without confinement to the demo directory, allowing directory enumeration outside the intended root. This issue is fixed in version 5.0.1.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-73244?


## How do I fix CVE-2026-73244?

No fix has been published for CVE-2026-73244 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73244 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73244 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73244 and fix it if it is affected.

What it is: CVE-2026-73244 is a medium-severity path traversal vulnerability in kekingcn kkFileView, published on 11 Aug 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-2026-73244 exists.

Affected product: kekingcn kkFileView. 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-2026-73244/ (Markdown: https://insights.sbomify.com/CVE-2026-73244/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73244
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73244
- OSV: https://osv.dev/vulnerability/CVE-2026-73244

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-73244/
Summaries are generated and may contain mistakes; the official description above is the record.