How severe is CVE-2025-57751?

CVE-2025-57751 has a CVSS 4.0 base score of 7.7, rated high severity.

Is CVE-2025-57751 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-57751?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-57751 have an EU (EUVD) identifier?

Yes. CVE-2025-57751 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25486.

When was CVE-2025-57751 published?

CVE-2025-57751 was published on 2025-08-21 and last updated on 2026-06-17.

CVE-2025-57751

CVE-2025-57751 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 4.0 base score 7.7)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25486
Weakness: CWE-400
Published: 2025-08-21
Last modified: 2026-06-17

Description

pyLoad is the free and open-source Download Manager written in pure Python. The jk parameter is received in pyLoad CNL Blueprint. Due to the lack of jk parameter verification, the jk parameter input by the user is directly determined as dykpy.evaljs(), resulting in the server CPU being fully occupied and the web-ui becoming unresponsive. This vulnerability is fixed in 0.5.0b3.dev92.

Frequently asked questions

What is CVE-2025-57751?: pyLoad is the free and open-source Download Manager written in pure Python. The jk parameter is received in pyLoad CNL Blueprint. Due to the lack of jk parameter verification, the jk parameter input by the user is directly determined as dykpy.evaljs(), resulting in the server CPU being fully occupied and the web-ui becoming unresponsive. This vulnerability is fixed in 0.5.0b3.dev92.
How severe is CVE-2025-57751?: CVE-2025-57751 has a CVSS 4.0 base score of 7.7, rated high severity.
Is CVE-2025-57751 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-57751?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-57751 have an EU (EUVD) identifier?: Yes. CVE-2025-57751 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25486.
When was CVE-2025-57751 published?: CVE-2025-57751 was published on 2025-08-21 and last updated on 2026-06-17.

References

https://github.com/pyload/pyload/security/advisories/GHSA-9gjj-6gj7-c4wj

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