CVE-2021-45457

Overly broad CORS configuration

7.5 HighFix available

In Apache Kylin, Cross-origin requests with credentials are allowed to be sent from any origin. This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

2.46%Up 1.8 points since Jan 6, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2021-45457
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-863
Updated: 2026-11-02

CVE List No score

Overly broad CORS configuration

Record: CVE-2021-45457
Updated: 2026-11-02

EUVDEUVD-2022-0646 No score

Record: EUVD-2022-0646
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mgpf-hhgf-cxg4 7.5

In Apache Kylin, Cross-origin requests with credentials are allowed to be sent from any origin.

Record: GHSA-mgpf-hhgf-cxg4
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-522
Updated: 2026-11-02

OSV 7.5

Record: CVE-2021-45457
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVGHSA-mgpf-hhgf-cxg4 7.5

In Apache Kylin, Cross-origin requests with credentials are allowed to be sent from any origin.

Record: GHSA-mgpf-hhgf-cxg4
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-522
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.apache.kylin:kylin` Maven	before 3.1.3	3.1.3
`org.apache.kylin:kylin` Maven	4.0.0 to 4.0.0	4.0.1
`org.apache.kylin:kylin` Maven	before 3.1.3, plus listed versions 0.7.1-incubating0.7.2-incubating1.0-incubating1.1-incubating1.1.1-incubating Show 36 moreShow less 1.21.3.01.5.01.5.11.5.21.5.2.11.5.31.5.41.5.4.11.6.02.0.02.1.02.2.02.3.02.3.12.3.22.4.02.4.12.5.02.5.12.5.22.6.02.6.12.6.22.6.32.6.42.6.52.6.63.0.03.0.0-alpha3.0.0-alpha23.0.13.0.23.1.03.1.13.1.2	3.1.3
`org.apache.kylin:kylin` Maven	4.0.0 up to 4.0.1	4.0.1

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-2021-45457 is a high vulnerability (CVSS 7.5) in Apache Kylin, published January 6, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.46%, the 84th percentile. Fixed in org.apache.kylin:kylin 3.1.3.