CVE-2025-53631
Medium
Description
flaskBlog is a blog app built with Flask. In versions 2.8.1 and prior, improper sanitization of postContent when submitting POST requests to /createpost leads to arbitrary JavaScript execution (XSS) on all pages the post is reflected on including /, /post/[ID], /admin/posts, and /user/[ID] of the user that made the post. At time of publication, there are no public patches available.
SeverityMedium
CVSS5.4
Exploit probability—
ProductDogukanurker Flaskblog
PublishedAug 14, 2025
First seenAug 14, 2025
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dogukanurker flaskblog | v ≤ 2.8.1 | — |
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