5.9

CVE-2022-33682: apache software foundation apache pulsar Improper Certificate Validation

CVSS: 5.9v3.1MediumModified
AliasesGHSA-jvf3-mfxv-jcqr
Published 23-09-2022Last modified 27-05-2025
Open JSON

Vulnerability summary

CVE-2022-33682 is a medium (CVSS 5.9) Improper Certificate Validation vulnerability in apache software foundation apache pulsar. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 52.8% 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
0.72%
0%100%
Low · +0.08 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. 27-05-2025
    Last modifiedVulnerability information updated.

Description

TLS hostname verification cannot be enabled in the Pulsar Broker's Java Client, the Pulsar Broker's Java Admin Client, the Pulsar WebSocket Proxy's Java Client, and the Pulsar Proxy's Admin Client leaving intra-cluster connections and geo-replication connections vulnerable to man in the middle attacks, which could leak credentials, configuration data, message data, and any other data sent by these clients. The vulnerability is for both the pulsar+ssl protocol and HTTPS. 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 by providing the client with a cryptographically valid certificate for an unrelated host. This issue affects Apache Pulsar Broker, Proxy, and WebSocket 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

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.08 pp

From 0.64% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.72%

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