CVE-2026-29042
Remote command injection via HTTP header in Nuclio Shell Runtime before 1.15.20.
Is CVE-2026-29042 being exploited?
Not confirmed. CVE-2026-29042 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 2.3% probability of exploitation in the next 30 days.
How severe is CVE-2026-29042?
CVE-2026-29042 is rated High with a CVSS score of 8.9. 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-2026-29042?
Yes. A fix has been recorded for CVE-2026-29042. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-29042 affect?
CVE-2026-29042 affects Nuclio Shell Runtime (pre-1.15.20), Nuclio Serverless Platform. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-29042?
Upgrade to 1.15.20+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted X-Nuclio-Arguments header; arbitrary commands on host.
Immediate action required
- affected< 1.15.20
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.