Cyber Resilience

CVE-2021-31522

Critical

Published: 06 January 2022

Published
06 January 2022
Modified
21 November 2024
KEV Added
—
Patch
06 January 2022
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0340 87.7th percentile
Risk Priority 22 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-31522 is a critical-severity Unsafe Reflection (CWE-470) vulnerability in Apache Kylin. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 12.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Kylin can receive user input and load any class through Class.forName(...). 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.

CWE(s)
CWE-470

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

apache
kylin
4.0.0 · 2.0.0 — 2.6.6 · 3.0.0 — 3.1.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-44 Detonation Chambers
addresses: CWE-470

Externally controlled class or code selection can be resolved and invoked inside the chamber, surfacing unsafe reflection without system impact.

References