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CVE-2026-91002

5.3 · MEDIUM

A weakness has been identified in stamparm maltrail up to 3.0.1.

Published Sep 15, 2026CWE-287EPSS 0.77%

Overview

CVE-2026-91002 is a medium-severity vulnerability. It was published on September 15, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A weakness has been identified in stamparm maltrail up to 3.0.1. This vulnerability affects the function _blacklist of the file core/httpd.py of the component Blacklist Endpoint. Executing a manipulation can lead to missing authentication. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 3.1 is able to resolve this issue. This patch is called d95868dff3da4d3bd4f942837a26cb7c73a797ae. It is suggested to upgrade the affected component. The vendor fixed the issue the same day it was reported, in version 3.1, by gating the endpoint on an authenticated session or the new Blacklist_ALLOWLIST option.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgist.github.com/simyat/fd48e9c257ab95405c109aec575977f1GitHubgithub.com/stamparm/maltrail/GitHubgithub.com/stamparm/maltrail/commit/d95868dff3da4d3bd4f942837a26cb7c73a797aeGitHubgithub.com/stamparm/maltrail/releases/tag/3.1Refvuldb.com/cve/CVE-2026-91002Refvuldb.com/submit/931699Refvuldb.com/vuln/403583Refvuldb.com/vuln/403583/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-91002?

CVE-2026-91002 is a medium-severity vulnerability. It was published on September 15, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-91002?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-91002?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-91002?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-91002 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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