Auth bypass in Dogukanurker Flaskblog
CVE-2025-55734
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Dogukanurker Flaskblog — versions <= 2.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/DogukanUrker/FlaskBlog/security/advisories/GHSA-jw79-2xvp-76p8 (Exploit, Third Party Advisory)
- github.com/DogukanUrker/FlaskBlog/security/advisories/GHSA-h239-vv39-v3vx (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55734?
- CVE-2025-55734 is a medium-severity vulnerability in Dogukanurker Flaskblog, classified under Missing Authorization. CVSS score: 6.5/10. Published 2025-08-19.
- How severe is CVE-2025-55734?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-55734 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.