CVE-2018-16516

Flask-Admin Cross-site Scripting vulnerability

6.1 MediumFix available

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

1.22%Up 0.4 points since Apr 14, 2021

What each source reports

NVD Score used 6.1

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: CVE-2018-16516
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: CVE-2018-16516
Updated: 2026-11-02

EUVDEUVD-2018-0074 No score

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: EUVD-2018-0074
Updated: 2026-11-03

GitHub AdvisoriesGHSA-894g-6j7q-2hx6 5.3

Flask-Admin Cross-site Scripting vulnerability

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: GHSA-894g-6j7q-2hx6
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 6.1

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: CVE-2018-16516
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-894g-6j7q-2hx6 5.3

Flask-Admin Cross-site Scripting vulnerability

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: GHSA-894g-6j7q-2hx6
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVPYSEC-2018-54 No score

helpers.py in Flask-Admin 1.5.2 has Reflected XSS via a crafted URL.

Record: PYSEC-2018-54
Updated: 2026-11-02

Affected products

flask-admin project flask-admin

Affected packages

Affected packages
Package	Affected	Fixed
`flask-admin` PyPI	before 1.5.3	1.5.3
`flask-admin` PyPI	before 1.5.3, plus listed versions 0.10.1.10.1.20.1.30.1.4 Show 26 moreShow less 0.2.00.2.10.2.20.3.00.4.00.4.10.4.21.0.01.0.11.0.21.0.31.0.41.0.51.0.61.0.71.0.81.0.91.1.01.2.01.3.01.4.01.4.11.4.21.5.01.5.11.5.2	1.5.3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-16516 is a medium vulnerability (CVSS 6.1) in Flask-admin Project Flask-admin, published September 5, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 68th percentile. Fixed in flask-admin 1.5.3.

References

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