VULNRABLE / Vulnerability / CVE-2026-77459

CVE-2026-77459

CRITICAL WATCH github.com/argoproj/argo-cd/v2 GHSA

Exploit verdict: CVSS 9.5 · critical severity

CVSS Score

9.5

Severity

CRITICAL

EPSS

Source

GHSA

Summary

Argo CD: AppProject destination-namespace and resource restrictions bypassed by PreDelete/PostDelete resource hooks

What this means

CVE-2026-77459 is a critical-severity vulnerability affecting github.com/argoproj/argo-cd/v2, rated CVSS 9.5. The EPSS model estimates a 1% probability of exploitation in the next 30 days. Published October 15, 2026.

View full advisory at GHSA →