# CVE-2026-44796: Nautobot ReDoS in object-bulk-rename endpoints

Source: https://junglewise.ai/threats/cve-2026-44796-nautobot-redos-in-object-bulk-rename-endpoints  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-28. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-44796 · Severity: medium · CVSS 6.5 · Published 2026-05-28

Nautobot, a popular network source of truth and automation platform, is vulnerable to a denial-of-service attack. An attacker with basic user permissions can submit a specially crafted search pattern during bulk rename operations that causes the system to freeze or become unresponsive. This can disrupt network management operations and impact the availability of the platform for all users.

Technologies: [nautobot (PyPI)](https://junglewise.ai/threats/technologies/nautobot). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-44796 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-44796 being exploited in the wild.

**How severe is CVE-2026-44796?** Medium severity, with a CVSS score of 6.5, published 28 May 2026.

**Which products and versions are affected?** nautobot (PyPI) ECOSYSTEM:introduced=0,fixed=2.4.33,introduced=3.0.0,fixed=3.1.2, ECOSYSTEM:introduced=3.0.0a2,fixed=3.1.2.

**Is there a fix for CVE-2026-44796?** Yes. nautobot (PyPI): upgrade to 3.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-44796 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-44796?** Check whether you run nautobot (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- nautobot (PyPI): upgrade to 3.1.2 or later

  ```sh
  pip install "nautobot>=3.1.2"
  ```


## Technical details

A Regular Expression Denial of Service (REDoS) vulnerability exists in Nautobot's object-bulk-rename UI endpoints, such as `/dcim/interfaces/rename/`. The vulnerability is rooted in the `find` field when the `use_regex` flag is enabled, where inefficient regular expression complexity (CWE-1333) allows for uncontrolled resource consumption (CWE-400). An authenticated attacker with network access can provide a maliciously crafted regex that triggers catastrophic backtracking, consuming excessive CPU cycles and leading to an application-wide denial of service. The issue has been mitigated in versions 2.4.33 and 3.1.2 by implementing a general-purpose timeout for regex evaluation in these specific endpoints.

## Affected products

- Nautobot Nautobot >= 3.0.0a2, < 3.1.2; < 2.4.33

## Identifiers

- CVE-2026-44796
- GHSA-qrpw-gjvh-x5gm
- PYSEC-2026-2226

## Timeline

- 2026-05-08: disclosed: Initial disclosure by reporter
- 2026-05-13: advisory: GitHub Advisory published
- 2026-05-28: other: NVD publication date

## References

- [https://api.github.com/users/whatisproblem](https://api.github.com/users/whatisproblem)
- [https://github.com/whatisproblem](https://github.com/whatisproblem)
- [https://api.github.com/users/whatisproblem/gists%7B/gist_id%7D](https://api.github.com/users/whatisproblem/gists%7B/gist_id%7D)
- [https://api.github.com/users/whatisproblem/repos](https://api.github.com/users/whatisproblem/repos)
- [https://avatars.githubusercontent.com/u/98449009?v=4](https://avatars.githubusercontent.com/u/98449009?v=4)
- [https://api.github.com/users/whatisproblem/events%7B/privacy%7D](https://api.github.com/users/whatisproblem/events%7B/privacy%7D)

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