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Critical

DeepChat's Mermaid rendering has XSS leading to RCE

Type: advisorySources: OSV

DeepChat is a smart assistant uses artificial intelligence. Prior to version 0.3.5, in the Mermaid chart rendering component, there is a risky operation of directly using `innerHTML` to set user content. Therefore, any malicious content rendered via Mermaid will directly trigger the exploit chain, leading to command execution. This vulnerability is primarily caused by a failure to fully address the existing XSS issue in the project, leading to another exploit chain. The exploit chain is consistent with the report GHSA-hqr4-4gfc-5p2j, executing arbitrary JavaScript code via XSS and arbitrary commands via exposed IPC. Version 0.3.5 contains an updated fix.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-58768
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 16:04 UTC · Revision 1

Source evidence

DeepChat's Mermaid rendering has XSS leading to RCE

core-osv · Original source

Published 9 Sept 2025, 20:19 UTC

DeepChat is a smart assistant uses artificial intelligence. Prior to version 0.3.5, in the Mermaid chart rendering component, there is a risky operation of directly using `innerHTML` to set user content. Therefore, any malicious content rendered via Mermaid will directly trigger the exploit chain, leading to command execution. This vulnerability is primarily caused by a failure to fully address the existing XSS issue in the project, leading to another exploit chain. The exploit chain is consistent with the report GHSA-hqr4-4gfc-5p2j, executing arbitrary JavaScript code via XSS and arbitrary commands via exposed IPC. Version 0.3.5 contains an updated fix.

osv:CVE-2025-58768
Complete source record
{
  "id": "cb7c285b077fc351e86594e6e7f23b6d1a726d448cf9fbc022ada20bd5932729",
  "url": "https://osv.dev/vulnerability/CVE-2025-58768",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DeepChat's Mermaid rendering has XSS leading to RCE",
    "summary": "DeepChat is a smart assistant uses artificial intelligence. Prior to version 0.3.5, in the Mermaid chart rendering component, there is a risky operation of directly using `innerHTML` to set user content. Therefore, any malicious content rendered via Mermaid will directly trigger the exploit chain, leading to command execution. This vulnerability is primarily caused by a failure to fully address the existing XSS issue in the project, leading to another exploit chain. The exploit chain is consistent with the report GHSA-hqr4-4gfc-5p2j, executing arbitrary JavaScript code via XSS and arbitrary commands via exposed IPC. Version 0.3.5 contains an updated fix.",
    "evidence": "osv:CVE-2025-58768",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-58768",
      "aliases": [
        "CVE-2025-58768",
        "GHSA-f7q5-vc93-wp6j"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/thinkinaixyz/deepchat",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3dc73a9ddc1b634ef0c6cb6b037d11222273f3dd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.3.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:thinkinai:deepchat:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.3.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.9",
            "v0.2.8",
            "v0.2.5",
            "v0.2.4",
            "v0.2.3-1",
            "v0.2.3",
            "v0.2.2",
            "v0.2.1",
            "v0.2.0-1",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0",
            "v0.0.16",
            "v0.0.15",
            "v0.0.14",
            "v0.0.13",
            "v0.0.12",
            "v0.0.10",
            "v0.0.11",
            "v0.0.9",
            "v0.0.7",
            "v0.0.6",
            "v0.0.5",
            "v0.0.3",
            "v0.0.2",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-58768.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.195483182Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/58xxx/CVE-2025-58768.json",
        "https://github.com/ThinkInAIXYZ/deepchat/security/advisories/GHSA-f7q5-vc93-wp6j",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-58768"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/58xxx/CVE-2025-58768.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-58768",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497109,
  "published_at": "2025-09-09T20:19:52.122+00:00"
}