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.
Published: 2026-10-05
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Tue, 06 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Tue, 06 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important


Mon, 05 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache struts
Vendors & Products Apache
Apache struts

Mon, 05 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
References

Mon, 05 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
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.
Title Apache Struts: OGNL injection in the legacy RESTful action mapper
Weaknesses CWE-917
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-10-06T14:09:06.711Z

Reserved: 2026-10-02T10:53:37.312Z

Link: CVE-2026-104711

cve-icon Vulnrichment

Updated: 2026-10-05T19:08:40.353Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-05T19:17:14.497

Modified: 2026-10-06T15:17:12.397

Link: CVE-2026-104711

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-05T18:35:10Z

Links: CVE-2026-104711 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T21:15:14Z

Weaknesses