# CVE-2025-55734: flaskBlo Authorization Bypass

> Unauthorized users can access admin subroutes to view sensitive post and comment data due to missing role checks.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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:** 19 Aug 2025
- **Updated:** 19 Aug 2025

## What is CVE-2025-55734?

CVE-2025-55734 is a medium-severity missing authorization vulnerability in DogukanUrker FlaskBlog, published on 19 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, the code checks if the userRole is "admin" only when visiting the /admin page, but not when visiting its subroutes. Specifically, only the file routes/adminPanel.py checks the user role when a user is trying to access the admin page, but that control is not done for the pages routes/adminPanelComments.py and routes/adminPanelPosts.py. Thus, an unauthorized user can bypass the intended restrictions, leaking sensitive data and accessing the following pages: /admin/posts, /adminpanel/posts, /admin/comments, and /adminpanel/comments.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2025-55734?

It affects 1 product.


Products: Dogukanurker Flaskblog.

## How do I fix CVE-2025-55734?

No fix has been published for CVE-2025-55734 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-55734 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55734 exists.

## Other vulnerabilities in DogukanUrker FlaskBlog

- [CVE-2025-55736](https://insights.sbomify.com/CVE-2025-55736/): flaskBlog allows arbitrary privilege escalation (critical 9.3)
- [CVE-2025-28104](https://insights.sbomify.com/CVE-2025-28104/): Missing authorization in n/a (critical 9.1)
- [CVE-2025-55737](https://insights.sbomify.com/CVE-2025-55737/): flaskBlog arbitrary comment delete (medium 6.9)
- [CVE-2025-28101](https://insights.sbomify.com/CVE-2025-28101/): Cross-site request forgery in n/a (medium 6.5)
- [CVE-2024-22414](https://insights.sbomify.com/CVE-2024-22414/): User profile page vulnerable to Cross Site Scripting (XSS) in flaskBlog (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-55734 and fix it if it is affected.

What it is: CVE-2025-55734 is a medium-severity missing authorization vulnerability in DogukanUrker FlaskBlog, published on 19 Aug 2025. 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-2025-55734 exists.

Affected product: DogukanUrker FlaskBlog. 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-2025-55734/ (Markdown: https://insights.sbomify.com/CVE-2025-55734/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-55734
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55734
- OSV: https://osv.dev/vulnerability/CVE-2025-55734

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-55734/
Summaries are generated and may contain mistakes; the official description above is the record.