CVE-2026-50545
RCE in Fission via unsafe podSpec passthrough; fixed in 1.24.0
Is CVE-2026-50545 being exploited?
Not confirmed. CVE-2026-50545 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 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-50545?
CVE-2026-50545 is rated Critical with a CVSS score of 9.9. 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-2026-50545?
Yes. A fix has been recorded for CVE-2026-50545. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-50545 affect?
CVE-2026-50545 affects Fission (<1.24.0) Kubernetes serverless framework. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-50545?
Upgrade to v1.24.0+; verify podSpec validation; redeploy
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via unvalidated podSpec fields; attacker could run code in cluster pods
Patch when possible
- affected< 1.24.0
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.