CVE-2026-83801 json
Nautobot: Stored cross-site scripting (XSS) in object create/edit form help text
published 2026-09-22 47 d ago modified 2026-10-01 38 d ago also EUVD-2026-84814 , GHSA-56v6-2fhr-wxgq , PYSEC-2026-4110
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi nautobot 2.4.37, 3.1.8
- networktocode nautobot 2.4.37, 3.1.8
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 47 d ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | nautobot | <2.4.37 >=3.0.0, <3.1.8 |
2.4.37 3.1.8 |
Affected products
- nautobot nautobot
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/nautobot/nautobot/commit/e6ff20d50e0759135c6d278e7b2ceec56ed9b3c8
web
-
github.com
/nautobot/nautobot/commit/f8a62466f3ebc42759a6373e7c79b0cad5751c2f
web
-
github.com
/nautobot/nautobot/security/advisories/GHSA-56v6-2fhr-wxgq
web
-
github.com
/nautobot/nautobot/releases/tag/v2.4.37
web
-
github.com
/nautobot/nautobot/releases/tag/v3.1.8
web
-
github.com
/nautobot/nautobot
package
-
pypi.org
/project/nautobot
package
-
github.com
/advisories/GHSA-56v6-2fhr-wxgq
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-83801
advisory
Sources
- CVE List CVE-2026-83801
- GitHub Advisory GHSA-56v6-2fhr-wxgq
- NVD CVE-2026-83801
- OSV PYSEC-2026-4110
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.