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Medium

YesWiki 4.2.0 before 4.7.0 Stored XSS via Comment Raw-HTML Syntax

Type: advisorySources: Official CVE List

YesWiki from 4.2.0 before 4.7.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject script into comment bodies using the wakka raw-HTML syntax. Attackers can post comments via the /api/comments endpoint that render unescaped through the Twig raw filter, executing JavaScript in administrators' and visitors' sessions.

Products
yeswiki
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-116206
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 17:05 UTC · Revision 1

Source evidence

YesWiki 4.2.0 before 4.7.0 Stored XSS via Comment Raw-HTML Syntax

core-cve · Original source

Published 25 Oct 2026, 13:20 UTC

YesWiki from 4.2.0 before 4.7.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject script into comment bodies using the wakka raw-HTML syntax. Attackers can post comments via the /api/comments endpoint that render unescaped through the Twig raw filter, executing JavaScript in administrators' and visitors' sessions.

cve:CVE-2026-116206

yeswiki

Fixed versions: Not specified

Complete source record
{
  "id": "a06bd20c3402e4e59692997f95a4cdc49097b614464958f46eaa04465acfb063",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116206",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "YesWiki 4.2.0 before 4.7.0 Stored XSS via Comment Raw-HTML Syntax",
    "summary": "YesWiki from 4.2.0 before 4.7.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject script into comment bodies using the wakka raw-HTML syntax. Attackers can post comments via the /api/comments endpoint that render unescaped through the Twig raw filter, executing JavaScript in administrators' and visitors' sessions.",
    "evidence": "cve:CVE-2026-116206",
    "products": [
      {
        "name": {
          "value": "yeswiki",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116206",
      "aliases": [
        "CVE-2026-116206"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 5.3,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "LOW",
            "subIntegrityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "CHANGED",
            "version": "3.1",
            "baseScore": 6.4,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
            "integrityImpact": "LOW",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "LOW",
            "confidentialityImpact": "LOW"
          }
        }
      ],
      "affected": [
        {
          "vendor": "YesWiki",
          "product": "yeswiki",
          "versions": [
            {
              "status": "affected",
              "version": "4.2.0",
              "lessThan": "4.7.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.7.0",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-25T13:20:36.803Z",
      "provider": "cve",
      "references": [
        "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-wq96-vjjh-hfc6",
        "https://www.vulncheck.com/advisories/yeswiki-4.2.0-before-4.7.0-stored-xss-via-comment-raw-html-syntax"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-25T13:20:36.803Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116206",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 146808,
  "published_at": "2026-10-25T13:20:36.803+00:00"
}