Apache Struts at a glance
1 of the exploited vulnerabilities are known to be used by ransomware (CISA).
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| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 0 | 0 |
| Oct 2026 | 4 | 1 |
| Sep 2026 | 0 | 0 |
| Aug 2026 | 5 | 0 |
| Jul 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| Mar 2026 | 0 | 0 |
| Feb 2026 | 0 | 0 |
| Jan 2026 | 1 | 0 |
| Dec 2025 | 2 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 1 | 1 |
33 results · Feed
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High 8.8
Apache Struts: Shared message formatter exposes date and time values across concurrent requests
Concurrent execution using shared resource with improper synchronization ('race condition') vulnerability in Apache Struts. Where a localized message formats a date or time argument, the formatter retained for that message by the application-wide text provide…
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Medium 6.5
Apache Struts: Unbounded request body read in the REST plugin
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 t…
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High 7.5
Apache Struts: Disproportionate response size when rendering BigDecimal request parameters
Asymmetric resource consumption (amplification) vulnerability in Apache Struts. When a request parameter is bound to an arbitrary-precision decimal (java.math.BigDecimal) property that is then rendered through the Struts tag library, the framework can produce…
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Critical 9.8
Apache Struts: OGNL injection in the legacy RESTful action mapper
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 OG…
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Medium 4.3
Apache Struts: Shared serialization state in the JSON plugin
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-response serialization state could be shared across concurrent requests, allowing response content associated with one request to become observable in another. On…
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Medium 4.3
Apache Struts: Shared parsing state in the JSON plugin
Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-request parsing state could be shared across concurrent requests, allowing data associated with one request to become observable in another, and configured parsin…
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High 7.5
Apache Struts: Unbounded growth of localized-text caches driven by the request locale
Allocation of resources without limits or throttling vulnerability in Apache Struts. When no fixed locale is configured, the locale used for localized-text lookups is taken from the incoming request, allowing an unauthenticated remote client to cause the fram…
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High 7.5
Apache Struts: Unbounded read of a Content Security Policy violation report
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…
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High 7.5CVE-2026-73633 Public exploit
Apache Struts: Unbounded read of a JSON request body
Uncontrolled resource consumption vulnerability in the JSON plugin of Apache Struts. When an application is configured to populate actions from a JSON request body, the plugin reads that body into memory without bounding how much it will accept, so a single r…
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High 8.1
Apache Struts, Apache Struts: XXE vulnerability in outdated XWork component
Missing XML Validation vulnerability in Apache Struts, Apache Struts. This issue affects Apache Struts: from 2.0.0 before 2.2.1; Apache Struts: from 2.2.1 through 6.1.0. Users are recommended to upgrade to version 6.1.1, which fixes the issue.
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High 8.2
Apache Struts: File leak in multipart request processing causes disk exhaustion (DoS) - version ranges fixed
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion. This issue affects Apache Struts: from 2.0.0 through 6.7.4, from 7.0.0 through 7.0.3. Users are recommended to upgrade to version 6.8.0 or 7.1.…
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High 7.5
Apache Struts: File leak in multipart request processing causes disk exhaustion (DoS)
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion. This issue affects Apache Struts: from 2.0.0 through 6.7.0, from 7.0.0 through 7.0.3. Users are recommended to upgrade to version 6.8.0 or 7.1.…
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Critical 9.5
Apache Struts: Mixing setters for uploaded files and normal fields can allow bypass file upload checks
File upload logic in Apache Struts is flawed. An attacker can manipulate file upload params to enable paths traversal and under some circumstances this can lead to uploading a malicious file which can be used to perform Remote Code Execution. This issue affec…
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Critical 9.8
Apache Struts: File upload component had a directory traversal vulnerability
An attacker can manipulate file upload params to enable paths traversal and under some circumstances this can lead to uploading a malicious file which can be used to perform Remote Code Execution. Users are recommended to upgrade to versions Struts 2.5.33 or …
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High 7.5
Apache Struts: excessive disk usage
When a Multipart request is performed but some of the fields exceed the maxStringLength limit, the upload files will remain in struts.multipart.saveDir even if the request has been denied. Users are recommended to upgrade to versions Struts 2.5.32 or 6.1.2.…
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Medium 4.3
Apache Struts: DoS via OOM owing to no sanity limit on normal form fields in multipart forms
Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2. Upgrade to Struts 2.5.31 or 6.1.2.1 or greater
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Medium 4.3
Apache Struts: DoS via OOM owing to not properly checking of list bounds
Allocation of Resources Without Limits or Throttling vulnerability in Apache Software Foundation Apache Struts.This issue affects Apache Struts: through 2.5.30, through 6.1.2. Upgrade to Struts 2.5.31 or 6.1.2.1 or greater.
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Critical 9.8
Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.
The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluatio…
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Critical 9.8
Remote code execution in Apache Struts
Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution. Affected software : Apache Struts 2.0.0 - Struts 2.5.25.
KEV Nov 3, 2021 -
Medium —
Cross-site Scripting in Apache Struts
Apache Struts before 2.3.20 has a cross-site scripting (XSS) vulnerability.
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High 8.1
Apache Struts vulnerable to remote command execution (RCE) due to improper input validation
Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upp…
KEV Nov 3, 2021 -
High 7.5
Apache Struts REST Plugin can potentially allow a DoS attack
The Apache Struts REST Plugin is using XStream library which is vulnerable and allow perform a DoS attack when using a malicious request with specially crafted XML payload. Upgrade to the Apache Struts version 2.5.16 and switch to an optional Jackson XML hand…
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Medium 6.2
Moderate severity vulnerability that affects org.apache.struts:struts2-rest-plugin
In Apache Struts 2.5 to 2.5.14, the REST Plugin is using an outdated JSON-lib library which is vulnerable and allow perform a DoS attack using malicious request with specially crafted JSON payload.
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Critical 9.8
Path Traversal in Apache Struts
In the Convention plugin in Apache Struts 2.3.x before 2.3.31, and 2.5.x before 2.5.5, it is possible to prepare a special URL which will be used for path traversal and execution of arbitrary code on server side.
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Medium 5.9
Apache Struts vulnerable to possible DoS attack when using URLValidator
In Apache Struts 2.5 through 2.5.5, if an application allows entering a URL in a form field and the built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL.
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Critical 9.8
Apache Struts 2.0.1 uses an unintentional expression in a Freemarker tag instead of string literal
In Apache Struts 2.0.0 through 2.3.33 and 2.5 through 2.5.10.1, using an unintentional expression in a Freemarker tag instead of string literals can lead to a RCE attack.
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High 7.5
Apache Struts allows entering a custom URL in a form field if built-in URLValidator is used
In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing vali…
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High 7.5
The REST Plugin in Apache Struts is using an outdated XStream library
The REST Plugin in Apache Struts 2.1.x, 2.3.7 through 2.3.33 and 2.5 through 2.5.12 is using an outdated XStream library which is vulnerable and allow perform a DoS attack using malicious request with specially crafted XML payload.
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High 8.1
REST Plugin in Apache Struts uses an XStreamHandler with an instance of XStream for deserialization without any type filtering
The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloa…
KEV Nov 3, 2021 -
Medium 5.9
Apache Struts Improper Input Validation vulnerability
If an application allows enter an URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. Solution is to upgrade to Apache Struts versi…
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High 7.5CVE-2017-9787 EPSS 11%
Spring AOP functionality (Struts) vulnerable to DoS attack
When using a Spring AOP functionality to secure Struts actions it is possible to perform a DoS attack. Solution is to upgrade to Apache Struts version 2.5.12 or 2.3.33.
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Critical 9.8
Code execution in Apache Struts 1 plugin
The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.
KEV Feb 10, 2022 -
Critical 9.8
Apache Struts vulnerable to remote arbitrary command execution due to improper input validation
The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 has incorrect exception handling and error-message generation during file-upload attempts, which allows remote attackers to execute arbitrary commands via a crafted …
KEV Nov 3, 2021