CVE-2024-34707: Nautobot's BANNER_* configuration can be used to inject arbitrary HTML content into Nautobot pages

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-05-14 · updated 2026-06-17
Weakness: CWE-79

Description

Nautobot is a Network Source of Truth and Network Automation Platform. A Nautobot user with admin privileges can modify the `BANNER_TOP`, `BANNER_BOTTOM`, and `BANNER_LOGIN` configuration settings via the `/admin/constance/config/` endpoint. Normally these settings are used to provide custom banner text at the top and bottom of all Nautobot web pages (or specifically on the login page in the case of `BANNER_LOGIN`) but it was reported that an admin user can make use of these settings to inject arbitrary HTML, potentially exposing Nautobot users to security issues such as cross-site scripting (stored XSS). The vulnerability is fixed in Nautobot 1.6.22 and 2.2.4.

Affected products

nautobot: before 1.6.22; from 2.0.0 before 2.2.4 — fixed in 1.6.22, 2.2.4

How to fix

Upgrade to a fixed version: nautobot 1.6.22, 2.2.4. Check the vendor advisory for mitigations.

References

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