CVE-2026-55276
An attacker can exploit multiple vulnerabilities in Apache Tomcat to bypass security measures, cause a Denial-of-Service condition, conduct Cross-Site Scripting attacks, or trigger other unspecified impacts.
CSIRTS triage
- What
- An attacker can exploit multiple vulnerabilities in Apache Tomcat to bypass security measures, cause a Denial-of-Service condition, conduct Cross-Site Scripting attacks, or trigger other unspecified impacts.
- Who is affected
- Deployments of Apache Tomcat are affected.
- Urgency
- Remediation is medium urgency due to the potential for various impacts including Denial of Service.
- Action
- Apply the latest security updates for Apache Tomcat.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.54% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.
Advisory coverage (5)
- medium[UPDATE] [medium] Apache Tomcat: Multiple vulnerabilitiescert-bund · 2026-08-18
- unknownUSN-8551-1: Tomcat vulnerabilitiesubuntu · 2026-07-15
- unknownApache Tomcat Multiple Vulnerabilitieshkcert · 2026-07-02
- unknownMultiple vulnerabilities in Apache Tomcat (June 30, 2026)cert-fr-avis · 2026-06-30
- criticalCVE-2026-55276: Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special…nvd · 2026-06-29
External references
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[](https://www.csirts.com/cve/CVE-2026-55276)