Vulnerability in Apache Software Foundation Apache Struts

[ Description ]Official description

Allocation of resources without limits or throttling vulnerability in the Apache Struts REST plugin. A request body is read into memory without any bound on how much will be accepted, so a single request can cause the server to allocate memory in proportion to its size, exhausting the Java heap and denying service to other users. No additional setting has to be enabled. Applications that do not use the REST plugin are not affected. This issue affects Apache Struts: from 2.1.8 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0. Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.

[ Fixes ]Fixes and patches

• Security bulletin: Apache Struts S2-077Vendor patch or bulletin · CERT-FR · cwiki.apache.org/confluence/display/WW/S2-077, cited by CERT-FR CERTFR-2026-AVI-1290
• Security bulletin: Apache Struts S2-076Vendor patch or bulletin · CERT-FR · cwiki.apache.org/confluence/display/WW/S2-076, cited by CERT-FR CERTFR-2026-AVI-1290
• Security bulletin: Apache Struts S2-075Vendor patch or bulletin · CERT-FR · cwiki.apache.org/confluence/display/WW/S2-075, cited by CERT-FR CERTFR-2026-AVI-1290
• Security bulletin: Apache Struts S2-078Vendor patch or bulletin · CERT-FR · cwiki.apache.org/confluence/display/WW/S2-078, cited by CERT-FR CERTFR-2026-AVI-1290

[ Advisories ]Government CERT advisories

• CERT-FR9 Oct 2026CERTFR-2026-AVI-1290

  Multiple vulnerabilities in Apache Struts Translated from French

  Multiple vulnerabilities have been discovered in Apache Struts. Some of them allow an attacker to cause remote arbitrary code execution, remote denial of service and a breach of data confidentiality. The vendor states…

  CVE-2026-104714CVE-2026-104711CVE-2026-104713+1 more CVEs
• BSI CERT-Bund4 Oct 2026WID-SEC-2026-3723

  Apache Struts: Multiple vulnerabilities Translated from German

  CVE-2026-104711CVE-2026-104714CVE-2026-104713+1 more CVEs

[ References ]References

• cwiki.apache.org/confluence/display/WW/S2-077Vendor Advisory
• www.openwall.com/lists/oss-security/2026/10/05/12Mailing ListThird Party Advisory