GHSA-9JMQ-XGJM-P8C2

Vulnerability from github – Published: 2026-02-20 18:31 – Updated: 2026-02-20 21:15
VLAI?
Summary
Sync-in Server has a stored cross-site scripting (XSS) vulnerability
Details

A Stored Cross-Site Scripting (XSS) vulnerability in Sync-in Server before 1.9.3 allows an authenticated attacker to execute arbitrary JavaScript in a victim's browser. By uploading a crafted SVG file containing a malicious payload, an attacker can access and exfiltrate sensitive information, including the user's session cookies.

Severity ?
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@sync-in/server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-67438"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-20T21:15:36Z",
    "nvd_published_at": "2026-02-20T16:22:02Z",
    "severity": "MODERATE"
  },
  "details": "A Stored Cross-Site Scripting (XSS) vulnerability in Sync-in Server before 1.9.3 allows an authenticated attacker to execute arbitrary JavaScript in a victim\u0027s browser. By uploading a crafted SVG file containing a malicious payload, an attacker can access and exfiltrate sensitive information, including the user\u0027s session cookies.",
  "id": "GHSA-9jmq-xgjm-p8c2",
  "modified": "2026-02-20T21:15:36Z",
  "published": "2026-02-20T18:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-67438"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Sync-in/server/commit/a6276d067725637310e4e83a3eee337aae81f439"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/x0root/86db30af91bb0e1707eb7e57a049b6ad"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Sync-in/server"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Sync-in/server/releases/tag/v1.9.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Sync-in Server has a stored cross-site scripting (XSS) vulnerability"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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