CVE-2026-105868 Payload - Stored XSS

Payload < 3.90.0 and canary < 4.0.0-canary.34 contain a stored XSS caused by local upload configurations accepting XML files with stylesheets, letting logged-in users execute JavaScript in the Payload origin, exploit requires user to be logged in.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.26% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Update 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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