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CVE-2026-104711— Apache Struts: OGNL injection in the legacy RESTful action mapper

Quick assessment

Affected
Apache Software Foundation Apache Struts
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Struts 中存在一个“特殊元素未正确中和”（即“表达式语言注入”）漏洞。如果应用程序配置为使用传统的 RESTful 动作映射器，攻击者可通过构造恶意请求注入 OGNL 表达式，从而导致远程代码执行。在 Struts 7 中，仅当禁用 OGNL 允许列表（allowlist）时才会受影响；而该允许列表默认情况下是启用的。使用默认动作映射器、restful2 映射器或 Struts REST 插件的应用程序不受此漏洞影响。 本漏洞影响以下 Apache Struts 版本：2.0.0 至 2.3.3

AI Predicted 9.8 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
Apache Software Foundation Apache Struts 2.0.0≤ 2.3.37 affected
2.5.0≤ 2.5.33 affected
6.0.0≤ 6.11.0 affected
7.0.0≤ 7.3.0 affected
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I. Basic Information for CVE-2026-104711

Vulnerability Information
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Vulnerability Title
Apache Struts: OGNL injection in the legacy RESTful action mapper
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
表达式语言语句中使用的特殊元素转义处理不恰当(表达式语言注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Struts 2.0.0 ~ 2.3.37 -

II. Public POCs for CVE-2026-104711

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III. Intelligence Information for CVE-2026-104711

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Other References for CVE-2026-104711 (1)

Same Patch Batch · Apache Software Foundation · 2026-10-05 · 4 CVEs total

CVE-2026-104714 Apache Struts: Shared message formatter exposes date and time values across concurrent req
CVE-2026-104713 Apache Struts: Unbounded request body read in the REST plugin
CVE-2026-104712 Apache Struts: Disproportionate response size when rendering BigDecimal request parameters

IV. Related Vulnerabilities

Same product: Apache Struts
Same vendor: Apache Software Foundation
Same weakness: CWE-917

V. Comments for CVE-2026-104711

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