[GHSA-rhg6-2vjh-j5qc] Traefik versions <= v2.11.51, >= v3.6.0 <= v3.6.22, and >...

advisories/unreviewed/2026/07/GHSA-rhg6-2vjh-j5qc/GHSA-rhg6-2vjh-j5qc.json

@@ -1,19 +1,84 @@
 {
   "schema_version": "1.4.0",
   "id": "GHSA-rhg6-2vjh-j5qc",
-  "modified": "2026-07-22T12:32:18Z",
+  "modified": "2026-07-22T12:32:24Z",
   "published": "2026-07-22T12:32:18Z",
   "aliases": [
     "CVE-2026-65600"
   ],
+  "summary": "Traefik: Authentication Bypass via Path Traversal in ReplacePathRegex Middleware",
   "details": "Traefik versions <= v2.11.51, >= v3.6.0 <= v3.6.22, and >= v3.7.0 <= v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator (e.g. regex \"^/api(.*)\", replacement \"/$1\"), the middleware forwards the replaced path to the backend without validating that it matches its normalized form. An unauthenticated remote attacker can send a crafted request (e.g. GET /api../admin) that produces an un-normalized path such as /../admin, which a backend that normalizes paths resolves to a protected route, bypassing authentication middleware. Fixed in v2.11.52, v3.6.23, and v3.7.7.",
   "severity": [
     {
       "type": "CVSS_V4",
-      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/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:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/traefik/traefik/v2"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "2.11.52"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/traefik/traefik/v3"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "3.6.0"
+            },
+            {
+              "fixed": "3.6.23"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 3.6.22"
+      }
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/traefik/traefik/v3"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "3.7.0"
+            },
+            {
+              "fixed": "3.7.7"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 3.7.6"
+      }
     }
   ],
-  "affected": [],
   "references": [
     {
       "type": "WEB",
@@ -26,6 +91,10 @@
     {
       "type": "WEB",
       "url": "https://www.vulncheck.com/advisories/traefik-before-authentication-bypass-via-replacepathregex"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "github.com/traefik/traefik"
     }
   ],
   "database_specific": {