---
id: "CVE-2026-21356"
kind: "vulnerability"
aliases: ["CVE-2026-21356"]
title: "CVE-2026-21356 rejected by CNA as issued in error"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "withdrawn"
category: "other"
products: []
ecosystems: []
tags: ["other"]
not_affected_if: []
published_at: "2026-10-20T19:17:35+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-25T05:04:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21356", "first_seen_at": "2026-10-23T21:57:21+00:00"}]
---

# CVE-2026-21356 rejected by CNA as issued in error

This CVE identifier was rejected and withdrawn because it was issued in error. No vulnerable product or flaw is described in the sources.

_Summary, check and fix written by a model from the sources; labelled as such._

## Fix

No action is indicated: the CVE was rejected as issued in error, so no patch or upgrade is needed for this identifier.

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-21356

## From the sources

Rejected reason: this CVE was issued in error.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_