Glances: Incomplete fix of CVE-2026-32608: action-template sanitizer is bypassed by nested stat values (process 'cmdline') → OS command injection

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.8 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

• CVE-2026-62982: 0.20% estimated exploitation activity in the next 30 days; percentile 9.53 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary CVE-2026-32608 ("Command Injection via Process Names in Action Command Templates") was fixed (commit 5680a5d) by adding sanitizemustachedict, which replaces the shell operators &&, |, , with spaces in the values rendered into action command templates. The sanitizer only processes top-level string values (if isinstance(v, str)). Attacker-controlled nested values — most notably a process's cmdline, which Glances exposes as a list and which is fully attacker-controlled via argv — are passed through unsanitized. Because the Mustache renderer (chevron) does not HTML-escape the pipe character |, a | embedded in such a nested value survives into the rendered command and is then interpreted by securepopen (which still interprets &&/|/ by default, allowoperators=True), re-introducing the exact command injection the CVE was meant to close. Details The fix (glances/actions.py): Render + sink (glances/actions.py:104-111): securepopen (glances/secure.py:17, default allowoperators=True)…

Published by the source

17 Aug 2026, 17:20 UTC

Last modified by the source

17 Aug 2026, 17:20 UTC

Source last checked

26 Oct 2026, 13:50 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-73wf-9vmv-5pv9

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# Patch Next advisory brief: CVE-2026-62982

Advisory: Glances: Incomplete fix of CVE-2026-32608: action-template sanitizer is bypassed by nested stat values (process 'cmdline') → OS command injection
IDs: CVE-2026-62982, GHSA-73wf-9vmv-5pv9
Record: https://patchnext.com/advisories/cve-2026-62982 (revision 1, source checked 26 Oct 2026, 13:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: glances 4.5.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI glances: affected >= 4.5.2, < 4.5.6; fixed in 4.5.6

## Suggested inspection (read-only)
- `python -m pip show glances`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on glances.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-73wf-9vmv-5pv9 (GitHub-reviewed advisory GHSA-73wf-9vmv-5pv9 lists affected ranges: PyPI glances >=4.5.2 <4.5.6)

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