Is CVE-2021-22160 in the CISA KEV catalog?

No. CVE-2021-22160 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22160?

CVE-2021-22160 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-22160?

CVE-2021-22160 has an EPSS score of 52.93% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22160?

Upgrade pulsar to 2.7.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-22160

CRITICALEPSS 99th pctl

9.8

CVSS v3

NVD

Description

If Apache Pulsar is configured to authenticate clients using tokens based on JSON Web Tokens (JWT), the signature of the token is not validated if the algorithm of the presented token is set to "none". This allows an attacker to connect to Pulsar instances as any user (incl. admins).

CWE-347

How to fix

Remediation Available

pulsarNVD

Affected:< 2.7.1Fixed in:2.7.1CVE-2021-22160derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

52.93%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Vendor Advisory2

Other references6

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-16042	Medium	6.5	82%	-	-
CVE-2025-59718	Critical	9.8	66%	KEV	Fix
CVE-2025-25292	Critical	9.8	64%	-	Fix
CVE-2013-3900	Medium	5.5	45%	KEV	-
CVE-2018-0114	High	7.5	43%	-	Fix
CVE-2020-1464	High	7.8	41%	KEV	-

Embed a live status badge for CVE-2021-22160

Markdown

[![CVE-2021-22160](https://tridentstack.com/cve/badge/CVE-2021-22160.svg)](https://tridentstack.com/cve/CVE-2021-22160)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-22160"><img src="https://tridentstack.com/cve/badge/CVE-2021-22160.svg" alt="CVE-2021-22160"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

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 2024-11-21.