CVE-2025-55736: flaskBlog is a blog app built with Flask

Q: How do I fix CVE-2025-55736?

flaskblog: upgrade to newer than 2.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-55736 being exploited?

CVE-2025-55736 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-55736 affect?

CVE-2025-55736 affects flaskblog. Severity is medium (CVSS 6.5). flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, an arbitrary user can change his role to "admin", giving its relative privileges (e.g. delete users, posts, comments etc.). The problem is in the routes/adminPanelUsers file.

Q: How urgent is CVE-2025-55736?

Priority 33/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2025-55736 is a medium-severity flaw (CVSS 6.5) affecting flaskblog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, an arbitrary user can change his role to "admin", giving its relative privileges (e.g. delete users, posts, comments etc.). The problem is in the routes/adminPanelUsers file.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-425, CWE-807
Published	2025-08-19
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: dogukanurker

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-19 19:15 UTCPublished CVE record published
2026-06-17 09:42 UTCUpdated Record last modified

dogukanurker flaskblog UPGRADE

Affected: <= 2.8.0

Fixed in: newer than 2.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flaskblog || rpm -q flaskblog || flaskblog --version

2. UPGRADE to newer than 2.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flaskblog

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flaskblog

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-55736?

flaskblog: upgrade to newer than 2.8.0. Exact commands for each OS are on this page.

Is CVE-2025-55736 being exploited?

CVE-2025-55736 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-55736 affect?

CVE-2025-55736 affects flaskblog. Severity is medium (CVSS 6.5). flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, an arbitrary user can change his role to "admin", giving its relative privileges (e.g. delete users, posts, comments etc.). The problem is in the routes/adminPanelUsers file.

How urgent is CVE-2025-55736?

Priority 33/100. Public exploit reference

Software pages

Flask vulnerabilities

Related CVEs

CVE-2025-55737 MEDIUM 6.5 UPGRADE flaskBlog is a blog app built with Flask
CVE-2025-55735 MEDIUM 5.4 UPGRADE flaskBlog is a blog app built with Flask
CVE-2025-55734 MEDIUM 6.5 UPGRADE flaskBlog is a blog app built with Flask
CVE-2025-53631 MEDIUM 5.4 UPGRADE flaskBlog is a blog app built with Flask
CVE-2025-28104 CRITICAL 9.1 DOWNGRADE Incorrect access control in laskBlog v2.6.1 allows attackers to access all usernames via a crafted input.

References

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