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CVE-2026-1961

8.0
High
EPSS 1%Patch availableMar 26, 2026

RCE via Foreman WebSocket proxy with unsanitized hostnames.

common questions

Is CVE-2026-1961 being exploited?

Not confirmed. CVE-2026-1961 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 1.4% probability of exploitation in the next 30 days.

How severe is CVE-2026-1961?

CVE-2026-1961 is rated High with a CVSS score of 8.0. 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-2026-1961?

Yes. A fix has been recorded for CVE-2026-1961. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-1961 affect?

CVE-2026-1961 affects Foreman. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-1961?

Patch when available; implement input validation and isolate proxies.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
Foreman
impact

RCE on Foreman server via VM VNC access; could expose credentials and compromise the entire managed infra.

action required

Immediate action required

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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