5.9

CVE-2022-33683: apache software foundation apache pulsar Improper Certificate Validation

CVSS: 5.9v3.1MediumModified
AliasesGHSA-j3qw-g67q-7m64
Published 23-09-2022Last modified 22-05-2025
Open JSON

Vulnerability summary

CVE-2022-33683 is a medium (CVSS 5.9) Improper Certificate Validation vulnerability in apache software foundation apache pulsar. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.5% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.68%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-09-2022
    PublishedVulnerability first disclosed.
  2. 22-05-2025
    Last modifiedVulnerability information updated.

Description

Apache Pulsar Brokers and Proxies create an internal Pulsar Admin Client that does not verify peer TLS certificates, even when tlsAllowInsecureConnection is disabled via configuration. The Pulsar Admin Client's intra-cluster and geo-replication HTTPS connections are vulnerable to man in the middle attacks, which could leak authentication data, configuration data, and any other data sent by these clients. An attacker can only take advantage of this vulnerability by taking control of a machine 'between' the client and the server. The attacker must then actively manipulate traffic to perform the attack. This issue affects Apache Pulsar Broker and Proxy versions 2.7.0 to 2.7.4; 2.8.0 to 2.8.3; 2.9.0 to 2.9.2; 2.10.0; 2.6.4 and earlier.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

+0.07 pp

From 0.61% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Org.apache.pulsar2 products
  • pulsar-broker< 2.7.5 | ≥ 2.8.0, < 2.8.4 | ≥ 2.9.0, < 2.9.3 | ≥ 2.10.0, < 2.10.1
  • pulsar-proxy< 2.7.5 | ≥ 2.8.0, < 2.8.4 | ≥ 2.9.0, < 2.9.3 | ≥ 2.10.0, < 2.10.1
Apache1 product
  • pulsarEOL< 2.7.5 | ≥ 2.8.0, < 2.8.4 | ≥ 2.9.0, < 2.9.3 | 2.10.0
Apache software foundation1 product
  • apache pulsar2.10.0 | ≥ 2.7, ≤ 2.7.4 | ≥ 2.8, ≤ 2.8.3 | ≥ 2.9, ≤ 2.9.2 | ≥ 2.6 and earlier, ≤ 2.6.4

3 vendors · 4 products

References

2 links