CVE-2026-83801

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

September 22, 2026

Last Modified

September 23, 2026

Advisory Details (5)

Auto-updated Sep 22, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

v3.1.8 - 2026-07-17

Patch available: nautobot/nautobot v3.1.8

https://github.com/nautobot/nautobot/releases/tag/v3.1.8
github_release Patch Available

v2.4.37 - 2026-07-17

Patch available: nautobot/nautobot v2.4.37

https://github.com/nautobot/nautobot/releases/tag/v2.4.37
github_commit

commit f8a62466f3eb (nautobot/nautobot)

Fix landed in nautobot/nautobot commit f8a62466f3eb — awaiting tagged release

https://github.com/nautobot/nautobot/commit/f8a62466f3ebc42759a6373e7c79b0cad5751c2f
github_commit

commit e6ff20d50e07 (nautobot/nautobot)

Fix landed in nautobot/nautobot commit e6ff20d50e07 — awaiting tagged release

https://github.com/nautobot/nautobot/commit/e6ff20d50e0759135c6d278e7b2ceec56ed9b3c8
github Patch Available

Stored cross-site scripting (XSS) in object create/edit form help text · Advisory · nautobot/nautobot · GitHub

https://github.com/nautobot/nautobot/security/advisories/GHSA-56v6-2fhr-wxgq

Vendor Advisories for CVE-2026-83801(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
nautobot1.0.0 ... 2.4.9 (194 versions)2.4.37—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-23 18:25 UTCEG score recompute
  2. 2026-09-23 17:54 UTCEPSS rescore
  3. 2026-09-23 15:20 UTCEG score recompute
  4. 2026-09-23 15:15 UTCEG score recompute
  5. 2026-09-22 20:32 UTCEG score recompute
  6. 2026-09-22 19:53 UTCEG score recompute
  7. 2026-09-22 19:52 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-83801?
CVE-2026-83801 is a medium vulnerability published on September 22, 2026. Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.37 and 3.1.8, a user with extras.addrelationship or extras.changerelationship permission can store HTML or JavaScript in a Relationship description, and a user with dcim.addmodulefamily or dcim.changemodulefamily…
When was CVE-2026-83801 disclosed?
CVE-2026-83801 was first published in the National Vulnerability Database on September 22, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-83801 actively exploited?
CVE-2026-83801 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 77.3% of all scored CVEs.
What is the CVSS score of CVE-2026-83801?
CVE-2026-83801 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-83801?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-83801, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-83801

Explore →

Is Your Infrastructure Affected by CVE-2026-83801?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs