Apache Kafka/Kafka Clients up to 3.9.1/4.0.0 log file

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.1$0-$5k5.33

Summaryinfo

A vulnerability marked as problematic has been reported in Apache Kafka and Kafka Clients up to 3.9.1/4.0.0. This affects an unknown function. Performing a manipulation results in log file. This vulnerability is reported as CVE-2026-33558. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Apache Kafka and Kafka Clients up to 3.9.1/4.0.0. This affects an unknown code. The manipulation with an unknown input leads to a log file vulnerability. CWE is classifying the issue as CWE-532. Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information. This is going to have an impact on confidentiality.

It is possible to read the advisory at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-33558. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/17/2026). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 3.9.2 or 4.0.1 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.2
VulDB Meta Temp Score: 2.1

VulDB Base Score: 2.2
VulDB Temp Score: 2.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Log file
CWE: CWE-532 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kafka/Kafka Clients 3.9.2/4.0.1

Timelineinfo

04/17/2026 Advisory disclosed
04/17/2026 +0 days VulDB entry created
04/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2026-33558 (🔒)
GCVE (CVE): GCVE-0-2026-33558
GCVE (VulDB): GCVE-100-358047

Entryinfo

Created: 04/17/2026 10:55
Changes: 04/17/2026 10:55 (49), 04/17/2026 10:56 (2)
Complete: 🔍
Cache ID: 216::103

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