CVE-2026-44796 Nautobot: Object bulk rename UI actions vulnerable to denial of service by crafted regular expression (REDoS)
Attackers can cause application-wide denial of service in Nautobot by submitting malicious regular expressions to bulk rename endpoints.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44796?
CVE-2026-44796 is a medium-severity denial of service vulnerability in nautobot, published on 28 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.33 and 3.1.2, Nautobot UI object-bulk-rename endpoints (for example, /dcim/interfaces/rename/) were vulnerable to application-wide denial of service via maliciously crafted regular expressions in the find field in combination with the use_regex flag. This vulnerability is fixed in 2.4.33 and 3.1.2.
Which versions are affected by CVE-2026-44796?
5 open source packages ship an affected version, including nautobot. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
nautobot PyPI | All versions | 2.4.33, 3.1.2 |
nautobot PyPI | All versions | 2.4.33 |
nautobot PyPI | All versions | 2.4.33 |
nautobot PyPI | From 3.0.0a2 | 3.1.2 |
nautobot PyPI | From 3.0.0a2 | 3.1.2 |
Products include Networktocode Nautobot.
How do I fix CVE-2026-44796?
Upgrade nautobot to a fixed version for your release line: 2.4.33 or 3.1.2.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-44796 being exploited?
There is no known exploitation of CVE-2026-44796 in the wild and no public exploit code.
Other vulnerabilities in nautobot
- CVE-2026-44797 Nautobot: Webhook definitions could be used for server-side request forgery (SSRF)
- CVE-2024-34707 Nautobot's BANNER_* configuration can be used to inject arbitrary HTML content into Nautobot pages
- CVE-2024-32979 Reflected Cross-site Scripting potential in all object list views in Nautobot
- CVE-2023-25657 Remote code execution in Jinja2 template rendering in Nautobot
- CVE-2026-44798 Nautobot: GitRepository.current_head field should not be writable through REST API
Sources
Also known as GHSA-qrpw-gjvh-x5gm, PYSEC-2026-2226.