CVE-2026-105868 | BDVDB-2026-383713 Detail

payloadcmspayload

Description#

Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, local upload configurations that accept XML files can store an XML file and stylesheet that execute JavaScript in the Payload origin when a logged-in user opens the file. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-434 Unrestricted Upload of File with Dangerous Type

References#

Exploit#

No public exploit known

History#

Version 12026-10-06Record published in the CVE List.
Version 22026-10-09Most recent update recorded in the CVE List.

Published

Published: 2026-10-06
Last modified: 2026-10-09

Vendor information

Vendor: payloadcms
Product: payload

All payloadcms vulnerabilities

Score

8.6 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 5.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Unrestricted File Upload

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 3.90.0
Fixed
Not stated
Vulnerable
>= 4.0.0-canary.0, < 4.0.0-canary.34
Fixed
Not stated

Scoring System

CVSS v4.0

8.6 High

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	Low
User Interaction	Passive
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).