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CVE-2026-104711

Apache Struts: OGNL injection in the legacy RESTful action mapper

Apache Software Foundation Apache StrutsFrameworks
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)1.19%Chance of exploitation activity in the next 30 days, higher than 67% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published5 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

Improper neutralization of special elements used in an expression language statement ('Expression Language Injection') vulnerability in Apache Struts. If the application is configured to use the legacy RESTful action mapper, a crafted request can inject an OGNL expression that may lead to remote code execution. Struts 7 is affected only when the OGNL allowlist is disabled; it is enabled by default. Applications using the default action mapper, the restful2 mapper, or the Struts REST plugin are not affected.

This issue affects Apache Struts: from 2.0.0 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.

Text from CVE List

Affected versions 4

  • Apache Strutsaffected: 2.0.0 through 2.3.37CVE List
  • Apache Strutsaffected: 2.5.0 through 2.5.33CVE List
  • Apache Strutsaffected: 6.0.0 through 6.11.0CVE List
  • Apache Strutsaffected: 7.0.0 through 7.3.0CVE List

References 1