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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-41293

Apache Tomcat: HTTP/2 request headers not validated

Description

Improper Input Validation vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected. Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache Tomcat

Default version status: unaffected

  • 11.0.0-M1 to ≤ 11.0.21affected
  • 10.1.0-M1 to ≤ 10.1.54affected
  • 9.0.0.M1 to ≤ 9.0.117affected
  • 10.0.0-M1 to ≤ 10.0.27affected
  • 8.5.0 to ≤ 8.5.100affected

References