CVE-2026-10561
Unauthenticated RCE in IBM LangFlow OSS 1.0.0–1.9.3 via Python isolation bypass.
Is CVE-2026-10561 being exploited?
Not confirmed. CVE-2026-10561 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 1.0% probability of exploitation in the next 30 days.
How severe is CVE-2026-10561?
CVE-2026-10561 is rated Critical with a CVSS score of 10.0. 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-2026-10561?
Yes. A fix has been recorded for CVE-2026-10561. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-10561 affect?
CVE-2026-10561 affects IBM LangFlow OSS 1.0.0-1.9.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-10561?
Update LangFlow to patched version when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated RCE on host; attacker can run arbitrary code to fully compromise the system.
Patch when possible
- affected>= 1.0.0 and <= 1.9.3
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.