Vulnerability

CVE-2026-33017

Critical· 9.8KEVCVSS9.8EPSS25%

.rules3/5

Langflow Code Injection Vulnerability

Langflow contains a code injection vulnerability that could allow building public flows without requiring authentication.

Threat signal

100/100

Severe

Severity

critical

CVSS

9.8

EPSS

25%

Active

KEV

CISA KEV — actively exploited

66d overdue

AffectedLangflow — Langflow

Added to KEV

2026-03-25

Federal patch due (BOD 22-01)

2026-04-08

Required action (CISA verbatim)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor advisory + references

CISA description: “Langflow contains a code injection vulnerability that could allow building public flows without requiring authentication.”

CVSS

v3.1via NVDOpen in FIRST calculator →

9.8/ 10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

24.6%

probability of exploitation in next 30 days

p96

higher than 96% of all CVEs

3-day trend↑ 0pp

Above the FIRST 'patch on a priority schedule' threshold.

Vendor VEX

No VEX statements published for CVE-2026-33017. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: yes
impact: total
mission: support

Lifecycle

2026-03-25Added to CISA KEVransomware: Unknown
2026-03-25Published
2026-04-08Federal patch due (BOD 22-01)
2026-06-12Last modified3 sources

Mentions in news & research

References

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.