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Thu, 13 Aug 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Cisagov
Cisagov malcolm |
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| Vendors & Products |
Cisagov
Cisagov malcolm |
Wed, 12 Aug 2026 23:30:00 +0000
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| Metrics |
ssvc
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Tue, 11 Aug 2026 20:30:00 +0000
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| Description | Malcolm is a network traffic analysis tool suite. The file-upload component (FilePond PHP backend) accepts uploads at `POST /server/php/submit.php` and stores them in a directory served by the same nginx and php-fpm instance. The allow-list that should restrict accepted file types is an empty array by default (`file-upload/php/config.php:16`), so the type check is a no-op and every extension is accepted. The filename sanitizer keeps the `.php` extension intact. Committed files land in `/var/www/upload/server/php/files` (`file-upload/php/config.php:7`), and the component's nginx routes any URL ending in `.php` to php-fpm. An authenticated `GET /server/php/files/<name>.php` then executes the uploaded code as `www-data`. Prior to version 26.06.1, in RBAC mode, the upload endpoint is reachable by the granular `ROLE_UPLOAD` role (`nginx/lua/nginx_auth_helpers.lua:71`), a role intended only for submitting capture files. As a result, a user holding the upload-only role runs arbitrary PHP as `www-data` inside the file-upload container. Version 26.06.1 fixes the issue. | |
| Title | Malcolm vulnerable to RCE via unrestricted .php upload to the file-upload component | |
| Weaknesses | CWE-434 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-12T22:13:05.815Z
Reserved: 2026-06-17T00:05:03.778Z
Link: CVE-2026-55676
Updated: 2026-08-12T22:09:15.579Z
Status : Received
Published: 2026-08-11T21:17:37.560
Modified: 2026-08-12T23:17:21.683
Link: CVE-2026-55676
No data.
OpenCVE Enrichment
Updated: 2026-08-13T09:49:15Z