Vulnerability Details CVE-2026-73634
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 43.0%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-73634
-
cpe:2.3:a:apache:struts:6.0.0
-
cpe:2.3:a:apache:struts:6.0.1
-
cpe:2.3:a:apache:struts:6.0.2
-
cpe:2.3:a:apache:struts:6.0.3
-
cpe:2.3:a:apache:struts:6.1.0
-
cpe:2.3:a:apache:struts:6.1.1
-
cpe:2.3:a:apache:struts:6.1.2
-
cpe:2.3:a:apache:struts:6.1.2.1
-
cpe:2.3:a:apache:struts:6.1.2.2
-
cpe:2.3:a:apache:struts:6.10.0
-
cpe:2.3:a:apache:struts:6.2.0
-
cpe:2.3:a:apache:struts:6.3.0
-
cpe:2.3:a:apache:struts:6.3.0.1
-
cpe:2.3:a:apache:struts:6.3.0.2
-
cpe:2.3:a:apache:struts:6.4.0
-
cpe:2.3:a:apache:struts:6.5.0
-
cpe:2.3:a:apache:struts:6.6.0
-
cpe:2.3:a:apache:struts:6.6.1
-
cpe:2.3:a:apache:struts:6.7.0
-
cpe:2.3:a:apache:struts:6.7.1
-
cpe:2.3:a:apache:struts:6.7.2
-
cpe:2.3:a:apache:struts:6.7.3
-
cpe:2.3:a:apache:struts:6.7.4
-
cpe:2.3:a:apache:struts:6.8.0
-
cpe:2.3:a:apache:struts:6.9.0
-
cpe:2.3:a:apache:struts:7.0.0
-
cpe:2.3:a:apache:struts:7.0.1
-
cpe:2.3:a:apache:struts:7.0.2
-
cpe:2.3:a:apache:struts:7.0.3
-
cpe:2.3:a:apache:struts:7.1.0
-
cpe:2.3:a:apache:struts:7.1.1
-
cpe:2.3:a:apache:struts:7.2.0
-
cpe:2.3:a:apache:struts:7.2.1