CVE-2026-34197 Apache ActiveMQ Improper Input Validation Vulnerability Added to KEV Catalog
Summary
CISA has added CVE-2026-34197 (Apache ActiveMQ Improper Input Validation) to its Known Exploited Vulnerabilities (KEV) Catalog based on evidence of active exploitation. This vulnerability poses significant risks to the federal enterprise as improper input validation is a frequent attack vector for malicious cyber actors. Binding Operational Directive 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by specified due dates. CISA strongly urges all organizations to prioritize timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice.
What changed
CISA added CVE-2026-34197, an Apache ActiveMQ improper input validation vulnerability, to its Known Exploited Vulnerabilities (KEV) Catalog based on confirmed evidence of active exploitation. The vulnerability meets CISA's specified criteria for inclusion in the catalog due to its active threat status.
Federal Civilian Executive Branch (FCEB) agencies are subject to Binding Operational Directive 22-01, which establishes binding remediation deadlines for vulnerabilities in the KEV Catalog. All organizations are strongly urged by CISA to prioritize timely remediation of this vulnerability as part of their vulnerability management practice, though the binding requirement applies only to FCEB agencies under BOD 22-01.
Archived snapshot
Apr 17, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Alert
CISA Adds One Known Exploited Vulnerability to Catalog
Release Date
April 16, 2026
CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
- CVE-2026-34197 Apache ActiveMQ Improper Input Validation 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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