github - ghsa-8g2j-rhfh-hq3r

ghsa-8g2j-rhfh-hq3r

Vulnerability from github

Published

2025-04-30 16:53

Modified

2025-05-01 13:30

Severity ?

9.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Summary

org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content

Details

Impact

The Markdown syntax is vulnerable to XSS through HTML. In particular, using Markdown syntax, it's possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that this code is executed by a user with admins or programming rights, this issue compromises the confidentiality, integrity and availability of the whole XWiki installation.

To reproduce, on an instance where the CommonMark Markdown Syntax 1.2 extension is installed, log in as a user without script rights. Edit a document and set its syntax to Markdown. Then , add the content <script>alert("XSS")</script> and refresh the page. If an alert appears containing "XSS", then the instance is vulnerable.

Patches

This has been patched in version 8.9 of the CommonMark Markdown Syntax 1.2 extension.

Workarounds

We're not aware of any workaround except upgrading.

References

https://jira.xwiki.org/browse/MARKDOWN-80
https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.contrib.markdown:syntax-markdown-commonmark12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.2"
            },
            {
              "fixed": "8.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-46558"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-30T16:53:27Z",
    "nvd_published_at": "2025-04-30T19:15:55Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\nThe Markdown syntax is vulnerable to XSS through HTML. In particular, using Markdown syntax, it\u0027s possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that this code is executed by a user with admins or programming rights, this issue compromises the confidentiality, integrity and availability of the whole XWiki installation.\n\nTo reproduce, on an instance where the CommonMark Markdown Syntax 1.2 extension is installed, log in as a user without script rights. Edit a document and set its syntax to Markdown. Then , add the content `\u003cscript\u003ealert(\"XSS\")\u003c/script\u003e` and refresh the page. If an alert appears containing \"XSS\", then the instance is vulnerable.\n\n### Patches\nThis has been patched in version 8.9 of the CommonMark Markdown Syntax 1.2 extension.\n\n### Workarounds\nWe\u0027re not aware of any workaround except upgrading.\n\n### References\n* https://jira.xwiki.org/browse/MARKDOWN-80\n* https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035",
  "id": "GHSA-8g2j-rhfh-hq3r",
  "modified": "2025-05-01T13:30:39Z",
  "published": "2025-04-30T16:53:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/xwiki-contrib/syntax-markdown/security/advisories/GHSA-8g2j-rhfh-hq3r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-46558"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/xwiki-contrib/syntax-markdown"
    },
    {
      "type": "WEB",
      "url": "https://jira.xwiki.org/browse/MARKDOWN-80"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content"
}

CVE-2025-46558 (GCVE-0-2025-46558)

Vulnerability from cvelistv5

Published

2025-04-30 18:27

Modified

2025-04-30 19:01

Severity ?

9.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Summary

XWiki Contrib's Syntax Markdown allows importing Markdown content into wiki pages and creating wiki content in Markdown. In versions starting from 8.2 to before 8.9, the Markdown syntax is vulnerable to cross-site scripting (XSS) through HTML. In particular, using Markdown syntax, it's possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that this code is executed by a user with admins or programming rights, this issue compromises the confidentiality, integrity and availability of the whole XWiki installation. This issue has been patched in version 8.9.

References

▼	URL	Tags
	https://github.com/xwiki-contrib/syntax-markdown/security/advisories/GHSA-8g2j-rhfh-hq3r	x_refsource_CONFIRM
	https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035	x_refsource_MISC
	https://jira.xwiki.org/browse/MARKDOWN-80	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	xwiki-contrib	syntax-markdown	Version: >= 8.2, < 8.9

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-46558",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-30T19:01:24.774798Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-30T19:01:32.321Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "syntax-markdown",
          "vendor": "xwiki-contrib",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 8.2, \u003c 8.9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "XWiki Contrib\u0027s Syntax Markdown allows importing Markdown content into wiki pages and creating wiki content in Markdown. In versions starting from 8.2 to before 8.9, the Markdown syntax is vulnerable to cross-site scripting (XSS) through HTML. In particular, using Markdown syntax, it\u0027s possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that this code is executed by a user with admins or programming rights, this issue compromises the confidentiality, integrity and availability of the whole XWiki installation. This issue has been patched in version 8.9."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-04-30T18:27:30.953Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/xwiki-contrib/syntax-markdown/security/advisories/GHSA-8g2j-rhfh-hq3r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/xwiki-contrib/syntax-markdown/security/advisories/GHSA-8g2j-rhfh-hq3r"
        },
        {
          "name": "https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035"
        },
        {
          "name": "https://jira.xwiki.org/browse/MARKDOWN-80",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jira.xwiki.org/browse/MARKDOWN-80"
        }
      ],
      "source": {
        "advisory": "GHSA-8g2j-rhfh-hq3r",
        "discovery": "UNKNOWN"
      },
      "title": "org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-46558",
    "datePublished": "2025-04-30T18:27:30.953Z",
    "dateReserved": "2025-04-24T21:10:48.173Z",
    "dateUpdated": "2025-04-30T19:01:32.321Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

ghsa-8g2j-rhfh-hq3r

Vulnerability from github

Impact

Patches

Workarounds

References

CVE-2025-46558 (GCVE-0-2025-46558)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature