CVE-2026-33511
Last modified
CVE-2026-33511 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pyload | Pyload | <= 0.4.20 |
| Pyload-Ng Project | Pyload-Ng | >= 0.5.0a5.dev528, < 0.5.0b3.dev97 |
References
- https://github.com/pyload/pyload/security/advisories/GHSA-g5j2-gxqh-x7pwExploit, Mitigation, Vendor Advisory
- https://github.com/pyload/pyload/security/advisories/GHSA-g5j2-gxqh-x7pwExploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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