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mediumCVSS 6.8NVD status: Deferred

CVE-2026-103258

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an unescaped parameter interpolation vulnerability in SendGrid, Freshservice, and ServiceNow nodes that allows attackers to bypass filters by breaking out of...

Componentn8n
Severitymedium (CVSS 6.8)
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Published (NVD)2026-10-01
Last modified2026-10-06
Affected versions
< 2.39.6
read from the advisory text: NVD has not published CPE data yet
Fixed in2.39.6
WeaknessCWE-943
CISA KEVnot listed

NVD description

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an unescaped parameter interpolation vulnerability in SendGrid, Freshservice, and ServiceNow nodes that allows attackers to bypass filters by breaking out of query literals. Attackers can exploit this by binding vulnerable node parameters to untrusted external input to widen single-record lookups into match-all queries, exposing bulk data including contact lists, tickets, and directory entries.

Does CVE-2026-103258 hit the version you run?Paste your docker-compose.yml, requirements.txt or package.json. The scanner checks your pinned versions against this CVE and every other one we track for n8n.
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What to do

  • Upgrade n8n to 2.39.6 or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

Read more

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