# CVE-2026-14702: zcaceres markdownify-mcp webpage-to-markdown Markdownify.ts saveToTempFile random values

> Insufficiently random values in temporary file generation allow local attackers to predict filenames, potentially leading to file collisions or overwrites.

- **Severity:** Low 2.0 (`CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jul 2026
- **Updated:** 6 Jul 2026
- **Also known as:** GHSA-cf27-pvxx-xmcj

## What is CVE-2026-14702?

CVE-2026-14702 is a low-severity vulnerability in zcaceres markdownify-mcp, published on 5 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw has been found in zcaceres markdownify-mcp up to 1.1.0. This impacts the function saveToTempFile of the file src/Markdownify.ts of the component webpage-to-markdown/youtube-to-markdown/bing-search-to-markdown. This manipulation causes insufficiently random values. The attack is restricted to local execution. A high degree of complexity is needed for the attack. The exploitability is said to be difficult. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

Weakness: CWE-330 (Use of Insufficiently Random Values), CWE-310

## Which versions are affected by CVE-2026-14702?


## How do I fix CVE-2026-14702?

No fix has been published for CVE-2026-14702 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14702 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14702 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14702 and fix it if it is affected.

What it is: CVE-2026-14702 is a low-severity vulnerability in zcaceres markdownify-mcp, published on 5 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14702 exists.

Affected product: zcaceres markdownify-mcp. 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-2026-14702/ (Markdown: https://insights.sbomify.com/CVE-2026-14702/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14702
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14702
- OSV: https://osv.dev/vulnerability/CVE-2026-14702

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14702/
Summaries are generated and may contain mistakes; the official description above is the record.