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BREW-SNAKEVIZ-CVE-2026-35536 (GHSA-78CV-MQJ4-43F7)

Vulnerability from osv_homebrew – Published: 2026-08-13 17:34 – Updated: 2026-09-17 19:58 – Source website
VLAI
Summary
Tornado has incomplete validation of cookie attributes
Details

Values passed to the domain, path, and samesite arguments of RequestHandler.set_cookie were not completely validated in versions of Tornado prior to 6.5.5. In particular, semicolons would be allowed, which could be used to inject attacker-controlled values for other cookie attributes.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "resource": "tornado",
        "resource_purl": "pkg:pypi/tornado@6.5.8",
        "upstream_fixed_in": "6.5.5"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "snakeviz",
        "purl": "pkg:brew/snakeviz"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.2.2_3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/tornado@6.5.8",
        "name": "tornado",
        "resource": "tornado",
        "strategy": "registry",
        "subject_version": "6.5.8"
      }
    ]
  },
  "details": "Values passed to the `domain`, `path`, and `samesite` arguments of `RequestHandler.set_cookie` were not completely validated in versions of Tornado prior to 6.5.5. In particular, semicolons would be allowed, which could be used to inject attacker-controlled values for other cookie attributes.",
  "id": "BREW-snakeviz-CVE-2026-35536",
  "modified": "2026-09-17T19:58:46Z",
  "published": "2026-08-13T17:34:42Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tornadoweb/tornado/commit/24a2d96ea115f663b223887deb0060f13974c104"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tornadoweb/tornado"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tornadoweb/tornado/releases/tag/v6.5.5"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Tornado has incomplete validation of cookie attributes",
  "upstream": [
    "GHSA-78cv-mqj4-43f7",
    "CVE-2026-35536",
    "GHSA-fqwm-6jpj-5wxc",
    "PYSEC-2026-2287"
  ]
}



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