Publish GHSA-78cv-mqj4-43f7

Author: advisory-database[bot]

advisories/github-reviewed/2026/03/GHSA-78cv-mqj4-43f7/GHSA-78cv-mqj4-43f7.json

@@ -0,0 +1,66 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-78cv-mqj4-43f7",
+  "modified": "2026-03-11T22:17:00Z",
+  "published": "2026-03-11T22:17:00Z",
+  "aliases": [],
+  "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": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "PyPI",
+        "name": "tornado"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "6.5.5"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 6.5.4"
+      }
+    }
+  ],
+  "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"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-74"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-03-11T22:17:00Z",
+    "nvd_published_at": null
+  }
+}