Is CVE-2021-32805 in the CISA KEV catalog?

No. CVE-2021-32805 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-32805?

CVE-2021-32805 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2021-32805?

CVE-2021-32805 has an EPSS score of 0.70% (49th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-32805?

Upgrade flask-appbuilder to 3.3.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-32805

HIGH

7.2

CVSS v3

NVD

Description

Flask-AppBuilder is an application development framework, built on top of Flask. In affected versions if using Flask-AppBuilder OAuth, an attacker can share a carefully crafted URL with a trusted domain for an application built with Flask-AppBuilder, this URL can redirect a user to a malicious site. This is an open redirect vulnerability. To resolve this issue upgrade to Flask-AppBuilder 3.2.2 or above. If upgrading is infeasible users may filter HTTP traffic containing `?next={next-site}` where the `next-site` domain is different from the application you are protecting as a workaround.

CWE-601Open Redirect

How to fix

Remediation Available

flask-appbuilderNVD

Affected:< 3.3.2Fixed in:3.3.2CVE-2021-32805derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Exploit Intelligence

0.70%probability of exploitation in 30 days

49thpercentile

Moderate risk: more likely to be exploited than 49% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-03-07.