CVE-2026-71476 nrwl CVE debrief

Who should care

Defenders responsible for maintaining and securing Nx installations, especially those using self-hosted remote caches, should assess exposure and apply patches to prevent potential exploitation.

Why it matters

CVE-2026-71476 is a high-severity vulnerability in Nx that allows for potential remote code execution via self-hosted remote cache exploitation. Defenders should prioritize verifying Nx installation integrity, applying patches, and reviewing cache server configurations to prevent exploitation.

• Potential remote code execution via crafted tar archive
• Arbitrary file writes on the machine running Nx
• Escalation of privileges through exploitation of vulnerable cache
• Verification of cache server configurations and integrity

Technical summary

The vulnerability affects Nx versions 20.8.0 to 22.7.6 and 23.0.0 to 23.0.1, where the self-hosted HTTP remote cache extracts downloaded cache artifacts without constraining where files are written. A malicious or on-path remote cache server can return a crafted tar archive whose entries escape the cache directory and write to arbitrary locations on the machine running Nx. This can be escalated to remote code execution. The issue is fixed in versions 22.7.7 and 23.0.2. Nx's default local cache and Nx Cloud are not affected; only workspaces configured to use a self-hosted remote cache are affected.

Defensive priority

Defenders should prioritize verifying the integrity of their Nx installations, especially those using self-hosted remote caches, and apply patches to prevent potential exploitation.

Recommended defensive actions

• Verify Nx installation integrity, especially for self-hosted remote cache users
• Apply patches to affected versions (22.7.7 and 23.0.2)
• Review and update cache server configurations to prevent potential exploitation
• Monitor system logs for suspicious activity related to Nx
• Perform vulnerability scanning to identify potentially exposed systems
• Implement compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. However, the exact scope of affected systems and potential impact require further verification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.