# CVE-2026-34203: Nautobot weak password requirement in REST API

Source: https://junglewise.ai/threats/cve-2026-34203-nautobot-weak-password-requirement-in-rest-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-31. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-34203 · Severity: low · CVSS 3.1 · Published 2026-03-31

Nautobot is a platform used by organizations to manage and automate their network infrastructure. A security flaw in its programming interface (API) allows users to be created or updated with weak passwords that bypass the organization's security policies. This could lead to accounts being protected by easily guessable passwords, potentially compromising the security of the network management system.

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

## Quick answers

**Is CVE-2026-34203 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34203 being exploited in the wild.

**How severe is CVE-2026-34203?** Low severity, with a CVSS score of 3.1, published 31 March 2026.

**Which products and versions are affected?** nautobot (PyPI) ECOSYSTEM:introduced=0,fixed=2.4.30, ECOSYSTEM:introduced=0,fixed=2.4.30,introduced=3.0.0,fixed=3.0.10.

**Is there a fix for CVE-2026-34203?** Yes. nautobot (PyPI): upgrade to 2.4.30, 3.0.10 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34203 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-34203?** 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 2.4.30, 3.0.10 or later

  ```sh
  pip install "nautobot>=3.0.10"
  ```


## Technical details

A vulnerability exists in Nautobot's UserSerializer where the REST API fails to invoke Django's validate_password() method. While the administrative web interface correctly enforces AUTH_PASSWORD_VALIDATORS, the API endpoint bypasses these checks. An attacker with high-privileged access (sufficient to create or edit users) could set passwords that do not meet complexity requirements. This issue is rooted in the missing validation call within the UserSerializer.validate() logic. The vulnerability is addressed in versions 2.4.30 and 3.0.10 by explicitly adding the password validation check to the API workflow.

## Affected products

- Network to Code Nautobot < 2.4.30, >= 3.0.0 < 3.0.10

## Identifiers

- CVE-2026-34203
- GHSA-xmpv-j7p2-j873
- PYSEC-2026-2224

## Timeline

- 2026-03-30: patched: Fix merged into develop and LTM branches.
- 2026-03-31: advisory: GitHub Security Advisory GHSA-xmpv-j7p2-j873 published.
- 2026-03-31: disclosed: CVE-2026-34203 published.

## References

- [https://github.com/nautobot/nautobot/commit/589f7caf54124ad76bc9fcbb7bdcaa25627cd598](https://github.com/nautobot/nautobot/commit/589f7caf54124ad76bc9fcbb7bdcaa25627cd598)
- [https://github.com/nautobot/nautobot/commit/d1ef3135aa02fa07de061e8c085f8cce425fe8c9](https://github.com/nautobot/nautobot/commit/d1ef3135aa02fa07de061e8c085f8cce425fe8c9)
- [https://github.com/nautobot/nautobot/pull/8778](https://github.com/nautobot/nautobot/pull/8778)
- [https://github.com/nautobot/nautobot/pull/8779](https://github.com/nautobot/nautobot/pull/8779)
- [https://github.com/nautobot/nautobot/security/advisories/GHSA-xmpv-j7p2-j873](https://github.com/nautobot/nautobot/security/advisories/GHSA-xmpv-j7p2-j873)

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