# CVE-2026-32632: Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding

Source: https://junglewise.ai/threats/cve-2026-32632-glances-s-rest-webui-lacks-host-validation-and-remains-exposed-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-18  
License: CC BY 4.0 with a link back

CVE-2026-32632 · Severity: low · CVSS 3.1 · Published 2026-03-18

Glances is an open-source system cross-platform monitoring tool. Glances recently added DNS rebinding protection for the MCP endpoint, but prior to version 4.5.2, the main REST/WebUI FastAPI application still accepts arbitrary `Host` headers and does not apply `TrustedHostMiddleware` or an equivalent host allowlist. As a result, the REST API, WebUI, and token endpoint remain reachable through attacker-controlled domains in classic DNS rebinding scenarios. Once the victim browser has rebound the attacker domain to the Glances service, same-origin policy no longer protects the API because the browser considers the rebinding domain to be the origin. This is a distinct issue from the previously reported default CORS weakness. CORS is not required for exploitation here because DNS rebinding causes the victim browser to treat the malicious domain as same-origin with the rebinding target. Version 4.5.2 contains a patch for the issue.

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

## Quick answers

**Is CVE-2026-32632 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-32632 being exploited in the wild.

**How severe is CVE-2026-32632?** Low severity, with a CVSS score of 3.1, published 18 March 2026.

**Which products and versions are affected?** glances (PyPI) ECOSYSTEM:introduced=0,fixed=4.5.2.

**Is there a fix for CVE-2026-32632?** Yes. glances (PyPI): upgrade to 4.5.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-32632?** Check whether you run glances (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

- glances (PyPI): upgrade to 4.5.2 or later

  ```sh
  pip install "glances>=4.5.2"
  ```


## Affected products

- glances (PyPI) ECOSYSTEM:introduced=0,fixed=4.5.2

## Identifiers

- CVE-2026-32632
- GHSA-hhcg-r27j-fhv9
- PYSEC-2026-2171

## Related threats

- [Glances as_dict_secure credential leak in API config endpoint](https://junglewise.ai/threats/cve-2026-68520-glances-as-dict-secure-credential-leak-in-api-config-endpoint)
- [Glances incomplete fix in alert action command execution](https://junglewise.ai/threats/cve-2026-68519-glances-incomplete-fix-in-alert-action-command-execution)
- [Glances incomplete command injection sanitizer fix in nested stat values](https://junglewise.ai/threats/cve-2026-62982-glances-incomplete-command-injection-sanitizer-fix-in-nested-stat)
- [Glances command injection via cross-field shell-operator reconstruction](https://junglewise.ai/threats/cve-2026-68518-glances-command-injection-via-cross-field-shell-operator)
- [Glances REST API CORS credentials bypass via wildcard in multi-origin list](https://junglewise.ai/threats/cve-2026-68517-glances-rest-api-cors-credentials-bypass-via-wildcard-in-multi)