Publish GHSA-c39v-8hrw-h448

Author: advisory-database[bot]

…-c39v-8hrw-h448/GHSA-c39v-8hrw-h448.json …-c39v-8hrw-h448/GHSA-c39v-8hrw-h448.jsonadvisories/unreviewed/2026/06/GHSA-c39v-8hrw-h448/GHSA-c39v-8hrw-h448.json renamed to advisories/github-reviewed/2026/06/GHSA-c39v-8hrw-h448/GHSA-c39v-8hrw-h448.json advisories/unreviewed/2026/06/GHSA-c39v-8hrw-h448/GHSA-c39v-8hrw-h448.json renamed to advisories/github-reviewed/2026/06/GHSA-c39v-8hrw-h448/GHSA-c39v-8hrw-h448.json

@@ -1,11 +1,12 @@
 {
   "schema_version": "1.4.0",
   "id": "GHSA-c39v-8hrw-h448",
-  "modified": "2026-06-22T18:34:16Z",
+  "modified": "2026-09-21T22:21:35Z",
   "published": "2026-06-22T18:34:16Z",
   "aliases": [
     "CVE-2026-56104"
   ],
+  "summary": "Chainlit contains a session hijacking vulnerability",
   "details": "Chainlit before 2.10.1 contains a session hijacking vulnerability that allows unauthenticated attackers to restore and inherit authenticated user sessions by presenting a valid sessionId during WebSocket session restoration without ownership verification. Attackers can exploit the restore_existing_session path to assume a victim's permissions and roles, enabling unauthorized invocation of tools and access to data restricted to the authenticated victim.",
   "severity": [
     {
@@ -14,10 +15,30 @@
     },
     {
       "type": "CVSS_V4",
-      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
+      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "PyPI",
+        "name": "chainlit"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "2.10.1"
+            }
+          ]
+        }
+      ]
     }
   ],
-  "affected": [],
   "references": [
     {
       "type": "ADVISORY",
@@ -31,6 +52,10 @@
       "type": "WEB",
       "url": "https://github.com/Chainlit/chainlit/commit/5effb664f1e0af4a4f0a42fe63ea979676039a7f"
     },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/Chainlit/chainlit"
+    },
     {
       "type": "WEB",
       "url": "https://github.com/Chainlit/chainlit/releases/tag/2.10.1"
@@ -45,8 +70,8 @@
       "CWE-862"
     ],
     "severity": "CRITICAL",
-    "github_reviewed": false,
-    "github_reviewed_at": null,
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-09-21T22:21:35Z",
     "nvd_published_at": "2026-06-22T16:16:40Z"
   }
 }