# CVE-2026-30230: Flare: Password‑Protected Thumbnail Bypass

> Attackers can bypass password protection to view thumbnails of protected files in the Flare file sharing platform.

- **Severity:** High 8.2 (`CVSS:4.0/AV:N/AC:L/AT:P/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:** 6 Mar 2026
- **Updated:** 9 Mar 2026
- **Also known as:** GHSA-3x7v-x3r6-mjh7

## What is CVE-2026-30230?

CVE-2026-30230 is a high-severity authentication bypass vulnerability in FlintSH Flare, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the thumbnail endpoint does not validate the password for password‑protected files. It checks ownership/admin for private files but skips password verification, allowing thumbnail access without the password. This issue has been patched in version 1.7.2.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-30230?

It affects 1 product.


Products: Flintsh Flare.

## How do I fix CVE-2026-30230?

No fix has been published for CVE-2026-30230 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30230 being exploited?

There is no known exploitation of CVE-2026-30230 in the wild and no public exploit code.

## Other vulnerabilities in FlintSH Flare

- [CVE-2026-30942](https://insights.sbomify.com/CVE-2026-30942/): Flare has a Path Traversal in /api/avatars/[filename] (high 8.3)
- [CVE-2026-30231](https://insights.sbomify.com/CVE-2026-30231/): Flare: Private File IDOR via raw/direct endpoints (medium 6.0)
- [CVE-2026-26993](https://insights.sbomify.com/CVE-2026-26993/): Flare has XSS vulnerability in Raw File Preview (medium 4.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30230 and fix it if it is affected.

What it is: CVE-2026-30230 is a high-severity authentication bypass vulnerability in FlintSH Flare, published on 6 Mar 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-2026-30230 in the wild and no public exploit code.

Affected product: FlintSH Flare. 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-2026-30230/ (Markdown: https://insights.sbomify.com/CVE-2026-30230/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30230
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30230
- OSV: https://osv.dev/vulnerability/CVE-2026-30230

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30230/
Summaries are generated and may contain mistakes; the official description above is the record.