XSS in Nautobot
CVE-2026-83801
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Nautobot — versions < 2.4.37, >= 3.0.0, < 3.1.8
Weakness classification (CWE)
References
- github.com/nautobot/nautobot/security/advisories/GHSA-56v6-2fhr-wxgq
- github.com/nautobot/nautobot/commit/e6ff20d50e0759135c6d278e7b2ceec56ed9b3c8
- github.com/nautobot/nautobot/commit/f8a62466f3ebc42759a6373e7c79b0cad5751c2f
- github.com/nautobot/nautobot/releases/tag/v2.4.37
- github.com/nautobot/nautobot/releases/tag/v3.1.8
Frequently asked questions
- What is CVE-2026-83801?
- CVE-2026-83801 is a medium-severity vulnerability in Nautobot, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-22.
- How severe is CVE-2026-83801?
- Medium severity. CVSS v3 base score is 5.4 out of 10.