cvedb.io
CVE-2025-55735
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2025-08-19T19:15:37.620 · Last modified 2026-06-17T09:42:08.397

Summary

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.

Affected products

dogukanurker — flaskblog

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.