CVE-2026-33511

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Source

https://cve.org/CVERecord?id=CVE-2026-33511

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33511.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-33511

Aliases

GHSA-g5j2-gxqh-x7pw

Published

2026-03-24T18:56:08.886Z

Modified

2026-07-15T01:48:51.894471289Z

Severity

8.8 (High) CVSS_V4 - 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 CVSS Calculator

Summary

pyload-ng: Authentication Bypass via Host Header Injection in ClickNLoad

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-639"
    ],
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "0.4.20"
                },
                {
                    "fixed": "0.5.0b3.dev97"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "fixed": "0.5.0b3.dev97"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33511.json"
}

References

Affected packages

Git / github.com/pyload/pyload

Affected ranges

Type

GIT

Repo

https://github.com/pyload/pyload

Events

Introduced

Last affected

1f29cd14d4c3d90d3249d20165a21c2b04ffed26

Database specific

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:pyload:pyload:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.4.20"
        }
    ]
}

Affected versions

v0.*

v0.1

v0.1.1

v0.2

v0.2.1

v0.2.2

v0.3

v0.3.1

v0.3.2

v0.4

v0.4.1

v0.4.2

v0.4.20

v0.4.3

v0.4.4

v0.4.5

v0.4.6

v0.4.7

v0.4.8

v0.4.9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33511.json"