flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, when creating a post, there's no validation of the content of the post stored in the variable "postContent". The vulnerability arises when displaying the content of the post using the | safe filter, that tells the engine to not escape the rendered content. This can lead to a stored XSS inside the content of the post. The code that causes the problem is in template/routes.html.
Metrics
Affected Vendors & Products
References
History
Fri, 22 Aug 2025 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:dogukanurker:flaskblog:*:*:*:*:*:*:*:* | |
| Metrics |
cvssV3_1
|
Thu, 21 Aug 2025 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Dogukanurker
Dogukanurker flaskblog |
|
| Vendors & Products |
Dogukanurker
Dogukanurker flaskblog |
Tue, 19 Aug 2025 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 19 Aug 2025 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, when creating a post, there's no validation of the content of the post stored in the variable "postContent". The vulnerability arises when displaying the content of the post using the | safe filter, that tells the engine to not escape the rendered content. This can lead to a stored XSS inside the content of the post. The code that causes the problem is in template/routes.html. | |
| Title | flaskBlog Stored XSS Vulnerability | |
| Weaknesses | CWE-79 CWE-807 |
|
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-08-19T18:56:42.600Z
Updated: 2025-08-19T19:18:45.395Z
Reserved: 2025-08-14T22:31:17.683Z
Link: CVE-2025-55735
Updated: 2025-08-19T19:16:58.109Z
Status : Analyzed
Published: 2025-08-19T19:15:37.620
Modified: 2025-08-22T20:57:15.983
Link: CVE-2025-55735
No data.