CVE-2026-8635
Authenticated users can escalate to superuser and execute arbitrary system commands via Langflow.
Is CVE-2026-8635 being exploited?
Not confirmed. CVE-2026-8635 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 0.53% probability of exploitation in the next 30 days.
How severe is CVE-2026-8635?
CVE-2026-8635 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-2026-8635?
Yes. A fix has been recorded for CVE-2026-8635. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-8635 affect?
CVE-2026-8635 affects IBM Langflow OSS 1.0.0 - 1.10.0, Deployments with Langflow service and DB access. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-8635?
Isolate Langflow, restrict DB/service permissions, rotate credentials, enable monitoring, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attackers can manipulate the DB to gain superuser, run arbitrary system commands, and fully compromise hosts running Langflow.
Immediate action required
- affected>= 1.0.0 and <= 1.10.0
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.