# CVE-2026-67185: TinyWeb 0.0.8 Path Traversal via URL Path Component

> Unauthenticated attackers can read arbitrary files, including credentials, by exploiting path traversal in TinyWeb's URL handling.

- **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:** 28 Jul 2026
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-qh4x-9gfh-82jc

## What is CVE-2026-67185?

CVE-2026-67185 is a high-severity path traversal vulnerability in GeneralSandman TinyWeb, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

TinyWeb through 0.0.8 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files by submitting ../ sequences in the URL path, which are concatenated directly to the configured web root in HttpBuilder::buildResponse() without normalization, dot-segment removal, or boundary checks. Attackers can craft a single request with ../ sequences that pass through the URL parser unchanged and reach the filesystem call via HttpFile::setFile(), exposing sensitive files such as credential stores and private keys when the server process runs as root.

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

## Which versions are affected by CVE-2026-67185?


## How do I fix CVE-2026-67185?

No fix has been published for CVE-2026-67185 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-67185 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67185 exists.

Public exploit code:

- Security Advisory: Unauthenticated Path Traversal Allows Arbitrary File Read (TinyWeb) (github_poc): https://github.com/theopaid/CVE-2026-67185-Unauthenticated-Path-Traversal-Allows-Arbitrary-File-Read-TinyWeb-

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-67185 and fix it if it is affected.

What it is: CVE-2026-67185 is a high-severity path traversal vulnerability in GeneralSandman TinyWeb, published on 28 Jul 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-2026-67185 exists.

Affected product: GeneralSandman TinyWeb. 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-2026-67185/ (Markdown: https://insights.sbomify.com/CVE-2026-67185/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-67185
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-67185
- OSV: https://osv.dev/vulnerability/CVE-2026-67185

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-67185/
Summaries are generated and may contain mistakes; the official description above is the record.