CVE-2024-22414: flaskBlog is a simple blog app built with Flask

Q: How do I fix CVE-2024-22414?

flaskblog: upgrade to newer than 1.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-22414 being exploited?

CVE-2024-22414 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-2024-22414 affect?

CVE-2024-22414 affects flaskblog. Severity is medium (CVSS 6.5). flaskBlog is a simple blog app built with Flask. Improper storage and rendering of the `/user/ ` page allows a user's comments to execute arbitrary javascript code. The html template `user.html` contains the following code snippet to r

Routine

MEDIUM 6.5UPGRADE

CVE-2024-22414 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 simple blog app built with Flask. Improper storage and rendering of the `/user/<user>` page allows a user's comments to execute arbitrary javascript code. The html template `user.html` contains the following code snippet to render comments made by a user: `<div class="content" tag="content">{{comment[2]|safe}}</div>`. Use of the "safe" tag causes flask to _not_ escape the rendered content. To remediate this, simply remove the `|saf

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	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-01-17
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

2024-01-17 21:15 UTCPublished CVE record published
2026-06-17 07:11 UTCUpdated Record last modified

dogukanurker flaskblog UPGRADE

Affected: <= 1.1.0

Fixed in: newer than 1.1.0

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 1.1.0 (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-2024-22414?

flaskblog: upgrade to newer than 1.1.0. Exact commands for each OS are on this page.

Is CVE-2024-22414 being exploited?

CVE-2024-22414 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-2024-22414 affect?

CVE-2024-22414 affects flaskblog. Severity is medium (CVSS 6.5). flaskBlog is a simple blog app built with Flask. Improper storage and rendering of the `/user/<user>` page allows a user's comments to execute arbitrary javascript code. The html template `user.html` contains the following code snippet to r

How urgent is CVE-2024-22414?

Priority 37/100. 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-2025-55736 MEDIUM 6.5 UPGRADE flaskBlog is a blog app built with Flask
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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

References

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