CVE-2026-105854

Payload: ReDoS in Multipart Content-Type Validation

State: Published
Severity: 8.7 High
Published: Oct 6, 2026
Updated: Oct 6, 2026
Reserved: Oct 5, 2026

Description

Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an extremely long time, resulting in uncontrolled resource consumption. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption
CWE-1333 Inefficient Regular Expression Complexity

Affected Products

Product	Versions
payloadpayloadcms	>= 3.0.0, < 3.90.0Affected >= 4.0.0-canary.0, < 4.0.0-canary.34Affected

References

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