CVE-2025-55737

flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, when deleting a comment, there's no validation of the ownership of the comment. Every user can delete an arbitrary comment of another user on every post, by simply intercepting the delete request and changing the commentID. The code that causes the problem is in routes/post.py.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/DogukanUrker/FlaskBlog/security/advisories/GHSA-6hp9-jv2f-88wr	Third Party Advisory Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:dogukanurker:flaskblog:*:*:*:*:*:*:*:*

History

21 Aug 2025, 18:40

Type	Values Removed	Values Added
References	~~() https://github.com/DogukanUrker/FlaskBlog/security/advisories/GHSA-6hp9-jv2f-88wr -~~	() https://github.com/DogukanUrker/FlaskBlog/security/advisories/GHSA-6hp9-jv2f-88wr - Third Party Advisory, Exploit
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5
CPE		cpe:2.3:a:dogukanurker:flaskblog::::::::
First Time		Dogukanurker flaskblog Dogukanurker

20 Aug 2025, 14:40

Type	Values Removed	Values Added
Summary		(es) flaskBlog es una aplicación de blog desarrollada con Flask. En la versión 2.8.0 y anteriores, al eliminar un comentario, no se valida su propiedad. Cualquier usuario puede eliminar cualquier comentario de otro usuario en cada publicación, simplemente interceptando la solicitud de eliminación y cambiando el ID del comentario. El código que causa el problema se encuentra en route/post.py.

19 Aug 2025, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-08-19 20:15

Updated : 2025-08-21 18:40

NVD link : CVE-2025-55737

Mitre link : CVE-2025-55737

CVE.ORG link : CVE-2025-55737

JSON object : View

Products Affected

dogukanurker

flaskblog

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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