CVE-2026-86471NVD

Vulnerability Summary

An unvalidated runtime configuration value in Apache CouchDB 3.5.2 and below on all platforms allows a CouchDB server admin to run arbitrary shell commands as the CouchDB operating system user.

Users are recommended to upgrade to version 3.5.3, which fixes this issue.

Severity Level

CRITICAL(9.3)

Published Date

Oct 20, 2026

Last Modified

Oct 21, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

N/A

CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredHigh

User InteractionNone

Confidentiality (Vulnerable System)High

Integrity (Vulnerable System)High

Availability (Vulnerable System)Low

Confidentiality (Subsequent System)High

Integrity (Subsequent System)High

Availability (Subsequent System)Low

Affected & Patched Versions

Affected Versions

Apache Software Foundation Apache CouchDB < 3.5.3

Patched Versions

Apache Software Foundation Apache CouchDB 3.5.3

🎁7-Day Free Trial — Try Pro or Team, no card required.

📧Email Delivery — Threat intel straight to your inbox.

♾️Unlimited Vendors — Track your entire stack.

🚨All New CVEs — Be the first to know.

📈EPSS Spike Alerts — Catch rising risk before it peaks.

🎯Custom EPSS/CVSS — Filter noise, focus on risk.

🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.

🐙GitHub Issues — Auto-tracked, no duplicates.

📬Weekly Digest — One clean summary, not inbox spam.

🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).

💬Webhooks — Slack & Teams integration.

🔀Smart Routing — Critical alerts to one channel, rest to another.

🚫Ad-Free — Uninterrupted experience.