cve.bz

CVE-2021-22160

9.8 criticalEPSS 53%

Critical (9.8) in apache pulsar. EPSS 53% chance of exploitation in the next 30 days. Fixed in org.apache.pulsar:pulsar 2.7.2.

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).

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
53% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE
CWE-347
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-3cv4-xxv7-934qMavenorg.apache.pulsar:pulsar<2.7.22.7.2

References

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