All vulnerabilities
CVE-2026-105854GHSA-2g7p-5934-q4w7

Payload: ReDoS in Multipart Content-Type Validation

payloadcms payloadnpmLibraries & packages
Open in ThreatlineRecord JSON
CVSS
8.7High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.35%Chance of exploitation activity in the next 30 days, higher than 27% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.90.0Also 4.0.0-canary.34GitHub
Published6 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

  • 3.90.0payload, npmGitHubnpm install payload@3.90.0
  • 4.0.0-canary.34payload, npmGitHubnpm install payload@4.0.0-canary.34

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Impact

A malformed multipart request body could take an extremely long time to finish.

Patches

Users should upgrade Payload packages to >= 3.90.0 or >= 4.0.0-canary.34.

Text from GitHub Advisory Database

Affected versions 6

  • payload, npm>= 3.0.0, < 3.90.0GitHub
  • payload, npm>= 4.0.0-canary.0, < 4.0.0-canary.34GitHub
  • payloadaffected: >= 3.0.0, < 3.90.0CVE List
  • payloadaffected: >= 4.0.0-canary.0, < 4.0.0-canary.34CVE List
  • payload, npmfrom 3.0.0, fixed in 3.90.0OSV
  • payload, npmfrom 4.0.0-canary.0, fixed in 4.0.0-canary.34OSV

References 4