CVE-2026-105868

waiting for further signalsZero needs more public information before it can validate it.

GHSA-9qpg-3cf8-w33x ↗EUVD-2026-93514 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
npm payload < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34
fixed in 3.90.0, 4.0.0-canary.34
ETK-2026-920, permanent identifier
pkg:npm/payload
13d 04h 17msince last run
18mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org publication
trigger signal (cve.org) +0hwaiting for further signals+32h39m
0
+2h
+4h
+6h
+8h
+10h

description

Payload local-upload deployments that permit XML files can retain attacker-supplied XML/XSL content that runs script in the Payload origin. Exploitation requires a logged-in user to open the uploaded file; XML acceptance is enabled by default.

mitigation

Upgrade Payload to 3.90.0 or later, or to 4.0.0-canary.34 or later on the canary line. Until upgraded, block XML and XSL uploads.

fixed in 3.90.0, 4.0.0-canary.34

check
no
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
0.17%5th percentile
agent run time
18m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-06 16:51Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-06 16:51Z
    ghsa: trigger signal, started the run
  2. 2026-10-06 16:51Z

this entry in the feed

GET /api/v1/feed/CVE-2026-105868

{
  "etk_id": "ETK-2026-920",
  "cve_id": "CVE-2026-105868",
  "display_id": "CVE-2026-105868",
  "ghsa_id": "GHSA-9qpg-3cf8-w33x",
  "euvd_id": "EUVD-2026-93514",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Payload XML uploads",
  "summary": "Payload local-upload deployments that permit XML files can retain attacker-supplied XML/XSL content that runs script in the Payload origin. Exploitation requires a logged-in user to open the uploaded file; XML acceptance is enabled by default.",
  "mitigation": "Upgrade Payload to 3.90.0 or later, or to 4.0.0-canary.34 or later on the canary line. Until upgraded, block XML and XSL uploads.",
  "vendor": "npm",
  "product": "payload",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 3.90.0"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "3.90.0"
      ],
      "package_name": "payload",
      "purl": "pkg:npm/payload"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0.0-canary.0, < 4.0.0-canary.34"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "4.0.0-canary.34"
      ],
      "package_name": "payload",
      "purl": "pkg:npm/payload"
    }
  ],
  "cwes": null,
  "cvss_score": 8.6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "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",
  "epss_score": 0.0017,
  "epss_percentile": 0.0571,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 17.8975916,
  "t0_at": "2026-10-06T16:51:34.054000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-06T16:51:34.054000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-06T16:51:34.054000+00:00",
      "url": "https://github.com/advisories/GHSA-9qpg-3cf8-w33x"
    }
  }
}

published 2026-10-08 01:12Z
last change 2026-10-21 05:31Z

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