CERT-FR Flags Multiple Apache Tomcat Flaws
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CERT-FR advises patching nine vulnerabilities in Apache Tomcat 9.x, 10.1.x and 11.0.x that risk data confidentiality and security bypass.
CERT-FR published an advisory covering multiple vulnerabilities in Apache Tomcat affecting versions 9.0.x prior to 9.0.123, 10.1.x prior to 10.1.61, and 11.0.x prior to 11.0.27. The vulnerabilities could allow an attacker to compromise data confidentiality, bypass security policies, or trigger other unspecified security issues as documented by the vendor. No exploitation in the wild is mentioned in the advisory.
Nine CVEs are referenced (CVE-2026-101296, CVE-2026-101356, CVE-2026-103119, CVE-2026-65183, CVE-2026-74048, CVE-2026-74049, CVE-2026-80353, CVE-2026-88041, CVE-2026-93446), though the advisory provides no technical details on each individual flaw's mechanism. Defenders running affected Tomcat versions should consult the Apache Tomcat security bulletins linked in the advisory and upgrade to the fixed versions (9.0.123, 10.1.61, or 11.0.27) as appropriate for their deployment.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1358
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