NetBox versions 2.9.5 before 4.7.0 contain a server-side template injection vulnerability that allows a low-privileged user with the "Can add custom links" permission to steal session cookies and API tokens of other users by exposing the raw Django HttpRequest object to the Jinja2 template context. Attackers can craft a custom link template embedding request.COOKIES['sessionid'] or a user's API token into an img src URL, which bypasses the clean_html sanitizer and auto-exfiltrates the victim's credentials to an attacker-controlled host when a privileged user views the object, enabling full account takeover.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9 · netbox-communityNVD modified 2026-10-27 01:30
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 4
- https://github.com/netbox-community/netbox/releases#release-v4.7.0 release-notes
- https://github.com/netbox-community/netbox/issues/22607 issue-tracking
- https://github.com/netbox-community/netbox/pull/22616 patch
- https://www.vulncheck.com/advisories/netbox-session-hijacking-via-custom-links third-party-advisory