CVE-2021-22160: apache software foundation apache pulsar
CVSS: 9.8v3.1CriticalModified
AliasesGHSA-3cv4-xxv7-934q
Published 26-05-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-22160 is a critical (CVSS 9.8) vulnerability in apache software foundation apache pulsar. EPSS estimates a 52.93% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
52.93%
0%100%
Critical · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 26-05-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
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).
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- OSV · MavenEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
52.93%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 52.93% on 18-09-2026
18-09-202618-10-2026
EPSS score52.93%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apache1 product
- pulsar< 2.7.1
Apache software foundation1 product
- apache pulsar≥ Apache Pulsar, < 2.7.1
Org.apache.pulsar1 product
- pulsar< 2.7.2
3 vendors · 3 products
