GHSA-RRX3-2X4G-MQ2H

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

Impact

In affected versions, a specially crafted Brotli-compressed envelope can cause Bugsink to spend excessive CPU time in decompression, leading to 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 2.0.6

References

The vulnerability in this security advisory is similar to, but distinct from, another brotli-related problem in Bugsink:

https://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269v

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": "2.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-64509"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-13T00:11:26Z",
    "nvd_published_at": "2025-11-10T22:15:39Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nIn affected versions, a specially crafted Brotli-compressed envelope can cause Bugsink to spend excessive CPU time in decompression, leading to 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 2.0.6\n\n### References\n\nThe vulnerability in this security advisory is similar to, but distinct from, another brotli-related problem in Bugsink:\n\nhttps://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269v",
  "id": "GHSA-rrx3-2x4g-mq2h",
  "modified": "2025-11-13T00:11:27Z",
  "published": "2025-11-13T00:11:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bugsink/bugsink/security/advisories/GHSA-rrx3-2x4g-mq2h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64509"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bugsink/bugsink/commit/1201f754e39265d2aac58edf49dc380bac334388"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bugsink/bugsink"
    }
  ],
  "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 (via CPU)"
}


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  • 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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