stamparm maltrail up to 3.0.1 Blacklist Endpoint core/httpd.py _blacklist missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k1.57

Summaryinfo

A vulnerability was found in stamparm maltrail up to 3.0.1. It has been classified as problematic. This issue affects the function _blacklist of the file core/httpd.py of the component Blacklist Endpoint. The manipulation leads to missing authentication. This vulnerability is listed as CVE-2026-91002. The attack may be initiated remotely. In addition, an exploit is available. Upgrading the affected component is recommended. 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.

Detailsinfo

A vulnerability was found in stamparm maltrail up to 3.0.1 and classified as problematic. This issue affects the function _blacklist of the file core/httpd.py of the component Blacklist Endpoint. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality.

It is possible to read the advisory at gist.github.com. The identification of this vulnerability is CVE-2026-91002. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at gist.github.com. It is declared as proof-of-concept. 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.

Upgrading to version 3.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch d95868dff3da4d3bd4f942837a26cb7c73a797ae is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
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: maltrail 3.1
Patch: d95868dff3da4d3bd4f942837a26cb7c73a797ae

Timelineinfo

09/14/2026 Advisory disclosed
09/14/2026 +0 days VulDB entry created
09/14/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: gist.github.com
Status: Confirmed

CVE: CVE-2026-91002 (🔒)
GCVE (CVE): GCVE-0-2026-91002
GCVE (VulDB): GCVE-100-403583
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/14/2026 17:43
Changes: 09/14/2026 17:43 (62)
Complete: 🔍
Submitter: inmoyang
Cache ID: 216::103

Submitinfo

Accepted

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