GHSA-XH32-CX6C-CP4V

Vulnerability from github – Published: 2025-06-26 16:54 – Updated: 2025-07-30 17:45
VLAI
Summary
Gogs XSS allowed by stored call in PDF renderer
Details

Summary

A stored XSS is present in Gogs which allows client-side Javascript code execution.

Details

Gogs Version:

docker images
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
gogs/gogs    latest    fe92583bc4fe   10 hours ago   99.3MB

Application version: 0.14.0+dev

Local setup using:

# Pull image from Docker Hub.
docker pull gogs/gogs

# Create local directory for volume.
sudo mkdir -p /var/gogs

# Use `docker run` for the first time.
docker run --name=gogs -p 10022:22 -p 10880:3000 -v /var/gogs:/data gogs/gogs

The vulnerability is caused by the usage of a vulnerable and outdated component: pdfjs-1.4.20 under public/plugins/.
Read more about this vulnerability at codeanlabs - CVE-2024-4367.

PoC

  1. Upload the Proof of Concept file hosted at https://codeanlabs.com/wp-content/uploads/2024/05/poc_generalized_CVE-2024-4367.pdf in a repository.
  2. Click on the file to be previewed.

poc

Credits

Edoardo Ottavianelli

Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/gogs/gogs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.3-0.20250608224432-110117b2e5e5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "gogs.io/gogs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.3-0.20250608224432-110117b2e5e5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-47943"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-26T16:54:01Z",
    "nvd_published_at": "2025-06-24T04:15:46Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nA stored XSS is present in Gogs which allows client-side Javascript code execution.\n\n### Details\n\nGogs Version:\n```\ndocker images\nREPOSITORY   TAG       IMAGE ID       CREATED        SIZE\ngogs/gogs    latest    fe92583bc4fe   10 hours ago   99.3MB\n```\n\nApplication version: `0.14.0+dev`\n\nLocal setup using:\n```bash\n# Pull image from Docker Hub.\ndocker pull gogs/gogs\n\n# Create local directory for volume.\nsudo mkdir -p /var/gogs\n\n# Use `docker run` for the first time.\ndocker run --name=gogs -p 10022:22 -p 10880:3000 -v /var/gogs:/data gogs/gogs\n```\n\nThe vulnerability is caused by the usage of a vulnerable and outdated component: `pdfjs-1.4.20` under public/plugins/.  \nRead more about this vulnerability at [codeanlabs - CVE-2024-4367](https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/).\n\n### PoC\n\n1. Upload the Proof of Concept file hosted at https://codeanlabs.com/wp-content/uploads/2024/05/poc_generalized_CVE-2024-4367.pdf in a repository.\n2. Click on the file to be previewed.\n\n![poc](https://github.com/user-attachments/assets/5af1303e-8751-49c8-af2e-d0631dd18957)\n\n\n### Credits\n\nEdoardo Ottavianelli",
  "id": "GHSA-xh32-cx6c-cp4v",
  "modified": "2025-07-30T17:45:37Z",
  "published": "2025-06-26T16:54:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/security/advisories/GHSA-xh32-cx6c-cp4v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47943"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/commit/110117b2e5e5baa4809c819bec701e929d2d8d40"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gogs/gogs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/releases/tag/v0.13.3"
    },
    {
      "type": "WEB",
      "url": "https://www.hacktivesecurity.com/blog/2025/07/15/cve-2025-47943-stored-xss-in-gogs-via-pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Gogs XSS allowed by stored call in PDF renderer"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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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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