CISA Adds CVE-2026-33017 to Known Exploited Vulnerabilities Catalog

CISA ICS-CERT Advisories

Published March 25th, 2026

Detected March 25th, 2026

Summary

CISA has added CVE-2026-33017, a Langflow Code Injection Vulnerability, to its Known Exploited Vulnerabilities (KEV) Catalog due to evidence of active exploitation. Federal Civilian Executive Branch (FCEB) agencies are required by Binding Operational Directive (BOD) 22-01 to remediate these vulnerabilities.

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What changed

CISA has added CVE-2026-33017, a Langflow Code Injection Vulnerability, to its Known Exploited Vulnerabilities (KEV) Catalog. This action is based on evidence of active exploitation and highlights a significant risk to the federal enterprise. Binding Operational Directive (BOD) 22-01 mandates that Federal Civilian Executive Branch (FCEB) agencies remediate vulnerabilities listed in the KEV Catalog by their due dates.

FCEB agencies must prioritize the remediation of CVE-2026-33017 to protect their networks. While BOD 22-01 specifically applies to FCEB agencies, CISA strongly recommends that all organizations incorporate KEV Catalog vulnerabilities into their vulnerability management practices to mitigate cyberattack risks. Failure to comply with BOD 22-01 can result in network security risks for FCEB agencies.

What to do next

Remediate CVE-2026-33017 on FCEB agency networks by the due date specified in BOD 22-01.
Incorporate KEV Catalog vulnerabilities into organizational vulnerability management practices.

Source document (simplified)

Alert

CISA Adds One Known Exploited Vulnerability to Catalog

Release Date

March 25, 2026

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.

CVE-2026-33017 Langflow Code Injection Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise.

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

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