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No exploitation reported

CVE-2026-126383

n8n before 1.123.89 NoSQL Injection via MongoDB Node Update Key

No exploitation reported by the sources we read.

  • Published2026-11-13
  • WeaknessCWE-943

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

n8n before 1.123.89, 2.x before 2.45.5, 2.46.x before 2.46.1, and 3.x before 3.0.1 contains a NoSQL injection vulnerability in the MongoDB node's Update and Find And Replace operations due to insufficient validation of the update key value taken from incoming items. Attackers who can supply untrusted input, such as a webhook body, to a workflow using these operations can make the node match and overwrite unintended documents or insert new documents in the MongoDB database.

Timeline

dates in UTC
  1. 2026-11-1309:35CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • n8n-io n8nother versions: not affected
    Affected
    • < 1.123.89fixed in 1.123.89semver

    Not affected = 1.123.89

  • n8n-io n8nother versions: not affected
    Affected
    • ≥ 2.46.0, < 2.46.1fixed in 2.46.1semver

    Not affected = 2.46.1

  • n8n-io n8nother versions: not affected
    Affected
    • ≥ 2.0.0, < 2.45.5fixed in 2.45.5semver

    Not affected = 2.45.5

  • n8n-io n8nother versions: not affected
    Affected
    • ≥ 3.0.0, < 3.0.1fixed in 3.0.1semver

    Not affected = 3.0.1

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-13

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-126383 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-11-13
  • CNACVSS 4.05.32026-11-13
  • CNACVSS 3.18.22026-11-13
  • NVDCVSS 3.18.2read 2026-11-13
  • CNAweakness (CWE)CWE-9432026-11-13
  • NVDweakness (CWE)CWE-943read 2026-11-13
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-11-13
Last Modified
2026-11-13
NVD status
Deferred
GitHub Advisory
GHSA-q2mq-gv2x-2mgf

Frequently asked questions

What is CVE-2026-126383?

n8n before 1.123.89, 2.x before 2.45.5, 2.46.x before 2.46.1, and 3.x before 3.0.1 contains a NoSQL injection vulnerability in the MongoDB node's Update and Find And Replace operations due to insufficient validation of the update key value taken from incoming items. Attackers who can supply untrusted input, such as a webhook body, to a workflow using these operations can make the node match and overwrite unintended documents or insert new documents in the MongoDB database.

Is CVE-2026-126383 actively exploited?

Active exploitation of CVE-2026-126383 has not been confirmed.

What is the CVSS score for CVE-2026-126383?

CVE-2026-126383 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H.

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