What is CVE-2025-28104?

CVE-2025-28104 is a critical-severity vulnerability in Dogukanurker Flaskblog, classified under Improper Access Control. CVSS score: 9.1/10. Published 2025-04-21.

How severe is CVE-2025-28104?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Dogukanurker Flaskblog

CVE-2025-28104

Incorrect access control in laskBlog v2.6.1 allows attackers to access all usernames via a crafted input.

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

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Dogukanurker Flaskblog — versions 2.6.1

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

github.com/DogukanUrker/flaskBlog/issues/130 (Exploit, Third Party Advisory, Issue Tracking)
gist.github.com/coleak2021/d5fea0f7d32a2de38130da089f4fb735 (Third Party Advisory)

Frequently asked questions

What is CVE-2025-28104?: CVE-2025-28104 is a critical-severity vulnerability in Dogukanurker Flaskblog, classified under Improper Access Control. CVSS score: 9.1/10. Published 2025-04-21.
How severe is CVE-2025-28104?: Critical severity. CVSS v3 base score is 9.1 out of 10.