What is CVE-2025-28102?

CVE-2025-28102 is a medium-severity vulnerability in Dogukanurker Flaskblog, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-04-21.

How severe is CVE-2025-28102?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Dogukanurker Flaskblog

CVE-2025-28102

A cross-site scripting (XSS) vulnerability in flaskBlog v2.6.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the postContent parameter at /createpost.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Dogukanurker Flaskblog — versions 2.6.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/DogukanUrker/flaskBlog/issues/130 (Exploit, Issue Tracking)
gist.github.com/coleak2021/edbd6e0766227ee96a7a4601e50773eb (Third Party Advisory)

Frequently asked questions

What is CVE-2025-28102?: CVE-2025-28102 is a medium-severity vulnerability in Dogukanurker Flaskblog, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-04-21.
How severe is CVE-2025-28102?: Medium severity. CVSS v3 base score is 6.1 out of 10.