CVE-2026-73634 PUBLISHED

Apache Struts: Unbounded read of a Content Security Policy violation report

Assigner: apache
Reserved: 13.08.2026 Published: 15.08.2026 Updated: 15.08.2026

Uncontrolled resource consumption vulnerability in Apache Struts. An application that exposes an endpoint collecting Content Security Policy violation reports reads the submitted report into memory without bounding how much it will accept, so a single request can exhaust the heap and deny service to other users. Such endpoints are ordinarily reachable without authentication. The core distribution maps no such endpoint by default; applications that do not collect violation reports are not affected.

This issue affects Apache Struts: from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1.

Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.

Product Status

Vendor Apache Software Foundation
Product Apache Struts
Versions Default: unaffected
  • affected from 6.0.0 to 6.10.0 (incl.)
  • affected from 7.0.0 to 7.2.1 (incl.)

Credits

  • Michael Mullins finder

References

Problem Types

  • CWE-400 Uncontrolled Resource Consumption CWE