Paper/Archive/CVE-2025-54802

CVE-2025-54802

pyload pyload — pyLoad CNL Blueprint is vulnerable to Path Traversal through `dlc_path` leading to Remote Code Execution (RCE)

Description · from the CVE record

pyLoad is the free and open-source Download Manager written in pure Python. In versions 0.5.0b3.dev89 and below, there is an opportunity for path traversal in pyLoad-ng CNL Blueprint via package parameter, allowing Arbitrary File Write which leads to Remote Code Execution (RCE). The addcrypted endpoint in pyload-ng suffers from an unsafe path construction vulnerability, allowing unauthenticated attackers to write arbitrary files outside the designated storage directory. This can be abused to overwrite critical system files, including cron jobs and systemd services, leading to privilege escalation and remote code execution as root. This issue is fixed in version 0.5.0b3.dev90.

Affected

ProductAffectedFixed inSource
pyload>= 0.5.0b3.dev89, < 0.5.0b3.dev90–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/pyload/pyload/security/advisories/GHSA-48rp-jc79-2264refgithub.com/pyload/pyload/pull/4596refgithub.com/pyload/pyload/commit/70a44fe02c03bce92337b5d370d2a45caa4de3d4