CVE-2026-73632

Published Aug 15, 2026

Last updated 19 days ago

CVSS medium 4.3

Overview

Description
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. Only the SMD / JSON-RPC handling of the JSON interceptor is affected, which is not enabled by default; applications using the json result type are not affected. This issue affects Apache Struts: 7.2.1. Users are recommended to upgrade to version 7.3.0, which fixes the issue.
Source
security@apache.org
NVD status
Analyzed
Products
struts

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.3
Impact score
1.4
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Severity
MEDIUM

Weaknesses

security@apache.org
CWE-567

Social media

Hype score
Not currently trending

  1. Apache Strutsの脆弱性(Moderate: CVE-2026-73631, CVE-2026-73633, CVE-2026-73634, CVE-2026-73635, Low: CVE-2026-73632) #sios_tech #security #vulnerability #セキュリティ #脆弱性 #apache #struts #dos https://t.co/8XUCJQetCY

    @omokazuki

    14 Aug 2026

    125 Impressions

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  2. Apache Strutsで5件の脆弱性（S2-070～S2-074） CVE-2026-73631 CVE-2026-73632 CVE-2026-73633 CVE-2026-73634 CVE-2026-73635 https://t.co/M7OFPs9BmA

    @autumn_good_35

    14 Aug 2026

    617 Impressions

    2 Retweets

    3 Likes

    1 Bookmark

    0 Replies

    0 Quotes

Configurations

Related CVEs

  1. 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 parsing limits not to be enforced as intended. Populating actions from a JSON request body is not enabled by default; applications that do not use the JSON plugin are not affected. This issue affects Apache Struts: 7.2.1. Users are recommended to upgrade to version 7.3.0, which fixes the issue.•CVE-2026-73631
  2. 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 can exhaust the heap and deny service to other users. Such endpoints are ordinarily reachable without authentication. The core distribution maps no such endpoint by default; applications that do not collect violation reports are not affected. This issue affects Apache Struts: from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1. Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.•CVE-2026-73634
  3. 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 framework's internal localized-text caches to grow without bound and exhaust the Java heap, denying service to other users. Applications that configure a fixed locale 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 6.10.0, from 7.0.0 through 7.2.1. Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.•CVE-2026-73635
  4. 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 request can exhaust the heap and deny service to other users. The plugin's configurable JSON input length limit does not bound this read. The JSON plugin is an optional component; applications that do not use it, or use it without enabling JSON request-body handling, 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 6.10.0, from 7.0.0 through 7.2.1. Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.•CVE-2026-73633
  5. 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.•CVE-2025-68493

References

Sources include official advisories and independent security research.