GHSA-FC2V-VCWJ-269V

Vulnerability from github – Published: 2025-11-13 00:10 – Updated: 2025-11-13 00:10
VLAI?
Summary
Bugsink is vulnerable to unauthenticated remote DoS via crafted Brotli input
Details

Impact

In affected versions, brotli "bombs" (highly compressed brotli streams, such as many zeros) can be sent to the server. Since the server will attempt to decompress these streams before applying various maximums, this can lead to exhaustion of the available memory and thus a Denial of Service.

This can be done if the DSN is known, which it is in many common setups (JavaScript, Mobile Apps).

Patches

Patched in Bugsink 2.0.5

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "bugsink"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-64508"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-13T00:10:50Z",
    "nvd_published_at": "2025-11-10T22:15:39Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nIn affected versions, brotli \"bombs\" (highly compressed brotli streams, such as many zeros) can be sent to the server. Since the server will attempt to decompress these streams before applying various maximums, this can lead to exhaustion of the available memory and thus a Denial of Service.\n\nThis can be done if the `DSN` is known, which it is in many common setups (JavaScript, Mobile Apps).\n\n### Patches\n\nPatched in Bugsink `2.0.5`",
  "id": "GHSA-fc2v-vcwj-269v",
  "modified": "2025-11-13T00:10:50Z",
  "published": "2025-11-13T00:10:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64508"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/brotli/issues/1327"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/brotli/issues/1375"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bugsink/bugsink/pull/266"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/brotli/pull/1234"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bugsink/bugsink/commit/3f65544aab3ad5303d97009136640de97b0676a5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/brotli/commit/67d78bc41db1a0d03f2e763497748f2f69946627"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bugsink/bugsink"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google/brotli/releases/tag/v1.2.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bugsink is vulnerable to unauthenticated remote DoS via crafted Brotli input"
}


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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.
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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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