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TI-2025-35155 Aliases CVE-2025-55734

flaskBlo Authorization Bypass

Priority HIGH 70CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00374 31st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DogukanUrkerFlaskBlogup to 2.8.0—No fix listedCNA
  • FlaskBlog VendorDogukanUrker Affected up to 2.8.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:dogukanurker:flaskblog:*:*:*:*:*:*:*:*up to 2.8.0VulnerableDogukanUrker
  • cpe:2.3:a:dogukanurker:flaskblog:*:*:*:*:*:*:*:* Versions up to 2.8.0 Vulnerable ·DogukanUrker

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55734

References

Exploit 2

  • TI-2025-35157 flaskBlog allows arbitrary privilege escalation CVSS 4.0CRITICAL 9.3
  • TI-2025-20720 Incorrect access control in laskBlog v2.6.1 allows attackers to access all usernames via a crafted input. CVSS 3.1CRITICAL 9.1
  • TI-2025-35158 flaskBlog arbitrary comment delete CVSS 4.0MEDIUM 6.9
  • TI-2025-20717 An arbitrary file deletion vulnerability in the /post/{postTitle} component of flaskBlog… CVSS 3.1MEDIUM 6.5
  • TI-2024-14987 User profile page vulnerable to Cross Site Scripting (XSS) in flaskBlog CVSS 3.1MEDIUM 6.5
  • TI-2025-20718 A cross-site scripting (XSS) vulnerability in flaskBlog v2.6.1 allows attackers to… CVSS 3.1MEDIUM 6.1
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences