Argo CD is widely used; exploit enables unauthorized exfiltration of Kubernetes Secrets, risking data breach across many organizations.
CVE-2026-42880
Argo CD auth gap exposes plaintext Kubernetes Secrets via SSRDiff.
Is CVE-2026-42880 being exploited?
Not confirmed. CVE-2026-42880 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.51% probability of exploitation in the next 30 days.
How severe is CVE-2026-42880?
CVE-2026-42880 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-42880?
Yes. A fix has been recorded for CVE-2026-42880. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42880 affect?
CVE-2026-42880 affects Argo CD (versions 3.2.0–3.2.10, 3.3.0–3.3.8). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42880?
Upgrade to 3.2.11 or 3.3.9 immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthorized read access can exfiltrate etcd Secrets via Server-Side Apply dry-run; credential leakage and data breach risk.
Patch when possible
- affected>= 3.2.0 and < 3.2.11
- affected>= 3.3.0 and < 3.3.9
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.