What is CVE-2026-33511?

CVE-2026-33511 is a critical-severity vulnerability in Pyload, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2026-03-24.

How severe is CVE-2026-33511?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Pyload

CVE-2026-33511

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 hea…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.004 (34.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Pyload — versions >= 0.4.20, < 0.5.0b3.dev97
Pyload-ng_project Pyload-ng

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33511?: CVE-2026-33511 is a critical-severity vulnerability in Pyload, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2026-03-24.
How severe is CVE-2026-33511?: Critical severity. CVSS v3 base score is 9.8 out of 10.