GHSA-97rh-rhh2-7vjv: payload (CVE-2026-105858)

Package	Ecosystem	Affected	Fixed in
payload	npm	<3.90.0 \|\| >=4.0.0-canary.0, <4.0.0-canary.34	3.90.0, 4.0.0-canary.34

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The npm package payload, in versions before 3.90.0 and from 4.0.0-canary.0 up to but not including 4.0.0-canary.34, is affected by a remote code execution flaw in its first-register operation. Per the source, an attacker can send a crafted request to this public operation, but only if the application uses the local auth strategy and has no initial user created yet. Upgrade payload to 3.90.0 or 4.0.0-canary.34 or later, where the submitted data used to create the first user is sanitized.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.1	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0047, the 41st percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:33 UTC First seen by agentprime
31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.