{"cve":"CVE-2025-55013","nvd":{"published":"2025-08-09T03:15:47.620","modified":"2026-06-17T09:41:06.903","status":"Deferred","description":"The Assemblyline 4 Service Client interfaces with the API to fetch tasks and publish the result for a service in Assemblyline 4. In versions below 4.6.1.dev138, the Assemblyline 4 Service Client (task_handler.py) accepts a SHA-256 value returned by the service server and uses it directly as a local file name.A malicious or compromised server (or any MITM that can speak to client) can return a path-traversal payload such as `../../../etc/cron.d/evil` and force the client to write the downloaded bytes to an arbitrary location on disk. This is fixed in version 4.6.1.dev138.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","score":4.2},"cwes":["CWE-23"],"references":["https://github.com/CybercentreCanada/assemblyline-service-client/commit/351414e7e96cc1f5640ae71ae51b939e8ba30900","https://github.com/CybercentreCanada/assemblyline/security/advisories/GHSA-75jv-vfxf-3865"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:06:45.861874017+00:00"},"epss":{"cve":"CVE-2025-55013","score":0.0062,"percentile":0.49701,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-75jv-vfxf-3865","url":"https://osv.dev/vulnerability/GHSA-75jv-vfxf-3865","summary":"Assemblyline 4 service client vulnerable to Arbitrary Write through path traversal in Client code ","modified":"2026-07-07T17:57:02.848397489Z","packages":[{"ecosystem":"PyPI","name":"assemblyline-service-client","purl":"pkg:pypi/assemblyline-service-client","ranges":["<4.6.0.stable11"],"fixed":["4.6.0.stable11"]},{"ecosystem":"PyPI","name":"assemblyline-service-client","purl":"pkg:pypi/assemblyline-service-client","ranges":[">=4.6.1.dev0 <4.6.1.dev138"],"fixed":["4.6.1.dev138"]}]},{"id":"PYSEC-2026-1194","url":"https://osv.dev/vulnerability/PYSEC-2026-1194","summary":"Assemblyline 4 service client vulnerable to Arbitrary Write through path traversal in Client code ","modified":"2026-07-07T17:47:11.629554721Z","packages":[{"ecosystem":"PyPI","name":"assemblyline-service-client","purl":"pkg:pypi/assemblyline-service-client","ranges":["<4.6.0.stable11",">=4.6.1.dev0 <4.6.1.dev138"],"fixed":["4.6.0.stable11","4.6.1.dev138"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}