How severe is CVE-2016-1000001?

CVE-2016-1000001 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2016-1000001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1000001?

CVE-2016-1000001 affects Flask-oidc Project Flask-oidc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1000001?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-1000001 published?

CVE-2016-1000001 was published on 2016-10-07 and last updated on 2026-06-17.

CVE-2016-1000001

CVE-2016-1000001 is a high-severity vulnerability in Flask-oidc Project Flask-oidc with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Flask-oidc Project Flask-oidc
Published: 2016-10-07
Last modified: 2026-06-17

Description

flask-oidc version 0.1.2 and earlier is vulnerable to an open redirect

Frequently asked questions

What is CVE-2016-1000001?: flask-oidc version 0.1.2 and earlier is vulnerable to an open redirect
How severe is CVE-2016-1000001?: CVE-2016-1000001 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2016-1000001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1000001?: CVE-2016-1000001 affects Flask-oidc Project Flask-oidc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1000001?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-1000001 published?: CVE-2016-1000001 was published on 2016-10-07 and last updated on 2026-06-17.

References

https://github.com/puiterwijk/flask-oidc/blob/master/flask_oidc/__init__.py#L293

Affected products (1)

cpe:2.3:a:flask-oidc_project:flask-oidc:*:*:*:*:*:*:*:*

Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.

Browse all CWE-601 (Open Redirect) vulnerabilities →