CVE-2026-105858 Payload - Remote Code Execution

Payload < 3.90.0 and canary < 4.0.0-canary.34 contains a remote code execution caused by crafted requests to the public first-register operation when local authentication is enabled and no initial user exists, letting attackers execute code remotely.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.48% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Upgrade to versions 3.90.0 or 4.0.0-canary.34 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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