GHSA-HFCF-79GH-F3JC

Vulnerability from github – Published: 2025-07-29 15:31 – Updated: 2025-08-22 21:08
VLAI?
Summary
Memos has Cross-Site Scripting (XSS) Vulnerability in Image URLs
Details

The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs. When a user views a memo containing such an image, their browser automatically fetches the image URL without explicit user consent or interaction beyond viewing the memo. This can be exploited by an attacker to disclose the viewing user's IP address, browser User-Agent string, and potentially other request-specific information to the attacker-controlled server, leading to information disclosure and user tracking.

Severity ?
5.2 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/usememos/memos"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.24.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-50738"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-29T22:09:45Z",
    "nvd_published_at": "2025-07-29T15:15:35Z",
    "severity": "MODERATE"
  },
  "details": "The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs. When a user views a memo containing such an image, their browser automatically fetches the image URL without explicit user consent or interaction beyond viewing the memo. This can be exploited by an attacker to disclose the viewing user\u0027s IP address, browser User-Agent string, and potentially other request-specific information to the attacker-controlled server, leading to information disclosure and user tracking.",
  "id": "GHSA-hfcf-79gh-f3jc",
  "modified": "2025-08-22T21:08:25Z",
  "published": "2025-07-29T15:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-50738"
    },
    {
      "type": "WEB",
      "url": "https://github.com/usememos/memos/issues/4707#issuecomment-2898504237"
    },
    {
      "type": "WEB",
      "url": "https://github.com/usememos/memos/commit/46d5307d7f210067b46e07400a728fa9095803d9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fai1424/Vulnerability-Research/tree/main/CVE-2025-50738"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/usememos/memos"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Memos has Cross-Site Scripting (XSS) Vulnerability in Image URLs"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.