CISA Adds Three Actively Exploited Vulnerabilities to KEV Catalog Affecting Langflow, Apache Tomcat and N-central
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added three actively exploited vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, warning organizations to remediate them immediately.
The vulnerabilities added on August 4, 2026, are CVE-2026-9198, CVE-2026-34486, and CVE-2026-18556. Federal agencies have until August 7, 2026, to apply mitigations.
CVE-2026-9198 in Langflow
CVE-2026-9198 is a code injection flaw in Langflow, an open-source platform used to build AI applications. Attackers can chain API requests without authentication to obtain tokens and execute arbitrary code on affected systems.
CVE-2026-34486 in Apache Tomcat
CVE-2026-34486 affects Apache Tomcat. Successful exploitation allows attackers to bypass the EncryptInterceptor mechanism responsible for encrypting traffic between cluster nodes, potentially exposing data in transit.
CVE-2026-18556 and CVE-2026-18577 in N-central
CVE-2026-18556 impacts N-able N-central, an IT operations management platform. The flaw permits authentication bypass via alternate channels. An incomplete remediation for this issue led to the discovery of CVE-2026-18577, which was added to the KEV catalog on August 3, 2026.
Security teams are advised to review the official CISA KEV catalog and apply vendor patches without delay.
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