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Advisory record · GHSA-9qpg-3cf8-w33x

Payload: Uploaded XML files could execute same-origin JavaScript

CVSS 8.6 HighEPSS 0.0016 · 5th percentile

Published by the GitHub Advisory Database at 7 Oct 2026, 20:28 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
payloadnpm<3.90.0 || >=4.0.0-canary.0, <4.0.0-canary.343.90.0, 4.0.0-canary.34
Identifiers
GHSA-9qpg-3cf8-w33x · CVE-2026-105868
Weakness (CWE)
CWE-434
Tags
Published
7 Oct 2026
Updated
7 Oct 2026

Machine-written summary

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

Payload (npm package payload) versions before 3.90.0 and from 4.0.0-canary.0 up to but not including 4.0.0-canary.34 are affected. Under certain local upload configurations, an uploaded XML file and stylesheet could execute JavaScript in the Payload origin when a logged-in user opens the file. Upgrade to 3.90.0 or 4.0.0-canary.34 or later; as a workaround, disallow XML and XSL uploads.

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

ScoreRatingCVSSVectorSource
8.6 High 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0016, the 5th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 13:33 UTC First seen by agentprime
  2. 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.