---
title: "CVE-2026-105868: Payload - Stored XSS"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-105868/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105868)

## 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](https://cwe.mitre.org/data/definitions/434.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105868](https://nvd.nist.gov/vuln/detail/CVE-2026-105868)
- [https://github.com/payloadcms/payload/commit/a8c3a8e8e2680c96ec4f66f5b3854c5df6c35adf](https://github.com/payloadcms/payload/commit/a8c3a8e8e2680c96ec4f66f5b3854c5df6c35adf)
- [https://github.com/payloadcms/payload/releases/tag/v3.90.0](https://github.com/payloadcms/payload/releases/tag/v3.90.0)
- [https://github.com/payloadcms/payload/security/advisories/GHSA-9qpg-3cf8-w33x](https://github.com/payloadcms/payload/security/advisories/GHSA-9qpg-3cf8-w33x)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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