CVE-2025-32962: Flask-AppBuilder is an application development framework built on top of Flask

Q: How do I fix CVE-2025-32962?

flask-appbuilder: upgrade to 4.6.2. Exact commands for each OS are on this page.

Q: Is CVE-2025-32962 being exploited?

CVE-2025-32962 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-2025-32962 affect?

CVE-2025-32962 affects flask-appbuilder. Severity is medium (CVSS 4.3). Flask-AppBuilder is an application development framework built on top of Flask. Versions prior to 4.6.2 would allow for a malicious unauthenticated actor to perform an open redirect by manipulating the Host header in HTTP requests. Flask-Ap

Q: How urgent is CVE-2025-32962?

Priority 18/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2025-32962 is a medium-severity flaw (CVSS 4.3) affecting flask-appbuilder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Flask-AppBuilder is an application development framework built on top of Flask. Versions prior to 4.6.2 would allow for a malicious unauthenticated actor to perform an open redirect by manipulating the Host header in HTTP requests. Flask-AppBuilder 4.6.2 introduced the `FAB_SAFE_REDIRECT_HOSTS` configuration variable, which allows administrators to explicitly define which domains are considered safe for redirection. As a workaround, use a reverse

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-601
Published	2025-05-16
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2025-05-16 14:15 UTCPublished CVE record published
2026-06-17 09:12 UTCUpdated Record last modified

dpgaspar flask-appbuilder UPGRADE

Affected: < 4.6.2

Fixed in: 4.6.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flask-appbuilder || rpm -q flask-appbuilder || flask-appbuilder --version

2. UPGRADE to 4.6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flask-appbuilder

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flask-appbuilder

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-2025-32962?

flask-appbuilder: upgrade to 4.6.2. Exact commands for each OS are on this page.

Is CVE-2025-32962 being exploited?

CVE-2025-32962 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-2025-32962 affect?

CVE-2025-32962 affects flask-appbuilder. Severity is medium (CVSS 4.3). Flask-AppBuilder is an application development framework built on top of Flask. Versions prior to 4.6.2 would allow for a malicious unauthenticated actor to perform an open redirect by manipulating the Host header in HTTP requests. Flask-Ap

How urgent is CVE-2025-32962?

Priority 18/100. No elevated risk signals yet.

Software pages

Flask vulnerabilities

Related CVEs

CVE-2025-58065 MEDIUM 6.5 UPGRADE Flask-AppBuilder is an application development framework
CVE-2025-24023 LOW 3.7 UPGRADE Flask-AppBuilder is an application development framework
CVE-2024-45314 LOW 3.6 UPGRADE Flask-AppBuilder is an application development framework

References

← Back to latest CVEs