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Vulnerability · Published Sep 22, 2026 · Assigned by GitHub_M

CVE-2026-83801Nautobot: Stored cross-site scripting (XSS) in object create/edit form help text

Medium 5.4

In plain English

A medium-severity cross-site scripting in nautobot from nautobot. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 77.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.37 and 3.1.8, a user with extras.add_relationship or extras.change_relationship permission can store HTML or JavaScript in a Relationship description, and a user with dcim.add_modulefamily or dcim.change_modulefamily permission can store it in a Module Family name. Nautobot assigns these values to form field help_text rendered by render_field.html through Django's |safe filter without adequate neutralization. The stored content executes in the authenticated browser session of any user, including an administrator or superuser, who opens an affected create or edit form. This can enable actions as the victim, session or token theft, and further privilege escalation. This issue is fixed in versions 2.4.37 and 3.1.8.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPInautobot2.4.37GHSA-56v6-2fhr-wxgq
PyPInautobot3.1.8GHSA-56v6-2fhr-wxgq
PyPInautobot2.4.37, 3.1.8PYSEC-2026-4110

Affected products (as reported)

VendorProductVersions
nautobot nautobot < 2.4.37>= 3.0.0, < 3.1.8

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References