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Vulnerabilities

Vulnerability · CVE-2025-54802

pyLoad is the free and open-source Download Manager written in pure Python.

Published Aug 5, 2025 · catalog updated Aug 5, 2025 · pyLoad is the free

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-54802. EPSS is 1.29%. Act only if a listed version of pyLoad is the free is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (pyLoad is the free).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.29%
Remediation
Version ranges on file
Affected products
vendor pyload pyload 0.5.0b3.dev89, < 0.5.0b3.dev90

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 escalat

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor pyload pyload 0.5.0b3.dev89, < 0.5.0b3.dev900.5.0b3.dev89, < 0.5.0b3.dev90

How to fix CVE-2025-54802

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-54802. EPSS is 1.29%. Act only if a listed version of pyLoad is the free is installed.

Which versions are affected?

Compare what you have installed with pyload pyload 0.5.0b3.dev89, < 0.5.0b3.dev90 0.5.0b3.dev89, < 0.5.0b3.dev90. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 5, 2025 · EUVD

    Detected

    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 at

  2. Aug 5, 2025 · EUVD

    Updated

    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 at

Sources

  • CVE.orgVulnerability recordCVE-2025-54802

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-54802

    30-day exploitation probability 1.29%

    first.org
  • EUVDVulnerability recordEUVD-2025-23574

    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).

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 29, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 20, 2026