CVE-2026-91002stamparm maltrail Blacklist Endpoint httpd.py _blacklist missing authentication
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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.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-306, CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Sep 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
stamparm maltrail stamparm:maltrail | 3.0.0; 3.0.1; 3.1 not affected | CNA record |
References
- https://vuldb.com/vuln/403583vdb-entry, technical-description
- https://vuldb.com/vuln/403583/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-91002third-party-advisory
- https://vuldb.com/submit/931699third-party-advisory
- https://gist.github.com/simyat/fd48e9c257ab95405c109aec575977f1exploit
- https://github.com/stamparm/maltrail/commit/d95868dff3da4d3bd4f942837a26cb7c73a797aepatch
- https://github.com/stamparm/maltrail/releases/tag/3.1patch
- https://github.com/stamparm/maltrail/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.