Vulnerability record · CVE-2026-33511 · published 24 March 2026

CVE-2026-33511: Pyload insecure direct object reference vulnerability

Pyload · Pyload

pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to access localhost-restricted endpoints, enabling them to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code. This issue has been patched in version 0.5.0b3.dev97.

8.8 CVSS 4.0 High EPSS 0.62% · top 52.2% CWE-639 · Insecure direct object reference

8.8CVSS 4.0 base score

0.62%EPSS exploitation probability, 30 days

NoNot in CISA KEV

2Affected product versions listed by NVD

2References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Pyload Pyload PPyload Ng Pyload Ng Project

References

Link	Tags
https://github.com/pyload/pyload/security/advisories/GHSA-g5j2-gxqh-x7pw	ExploitMitigationVendor Advisory
https://github.com/pyload/pyload/security/advisories/GHSA-g5j2-gxqh-x7pw	ExploitMitigationVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-33511), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.