[GHSA-8m2g-8cgm-3vcp] DeepSeek Harness before 0.1.2-alpha.1 contains an...

advisories/unreviewed/2026/09/GHSA-8m2g-8cgm-3vcp/GHSA-8m2g-8cgm-3vcp.json

@@ -1,23 +1,40 @@
 {
   "schema_version": "1.4.0",
   "id": "GHSA-8m2g-8cgm-3vcp",
-  "modified": "2026-09-10T15:32:55Z",
+  "modified": "2026-09-10T15:32:56Z",
   "published": "2026-09-08T18:32:01Z",
   "aliases": [
     "CVE-2026-82533"
   ],
+  "summary": "DeepSeek Harness local HTTP control-plane API authentication bypass via Host header spoofing",
   "details": "DeepSeek Harness before 0.1.2-alpha.1 contains an authentication bypass vulnerability in its local HTTP control-plane API that allows attackers to gain full agent control by supplying a spoofed Host header, as the server validates only the client-supplied Host header value rather than the actual TCP connection origin. Attackers can exploit this flaw to invoke privileged commands such as commands/execute with danger-full-access permissions, escalate session approval policies to unconfined execution, and retrieve all stored conversations without any credential or API key.",
   "severity": [
-    {
-      "type": "CVSS_V3",
-      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
-    },
     {
       "type": "CVSS_V4",
-      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "@deepseek-ai/dsh-client-connection"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.1.2-alpha.1"
+            }
+          ]
+        }
+      ]
     }
   ],
-  "affected": [],
   "references": [
     {
       "type": "ADVISORY",
@@ -27,6 +44,10 @@
       "type": "WEB",
       "url": "https://github.com/deepseek-ai/deepseek-harness/commit/3e24087bfaeabe40b58ba2f7b936895b8f93fe27"
     },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/deepseek-ai/deepseek-harness/blob/dsh-v0.1.1-rc.2/packages/client/connection/src/api-request-trust.ts#L96-L108"
+    },
     {
       "type": "WEB",
       "url": "https://github.com/deepseek-ai/deepseek-harness/releases/tag/dsh-v0.1.2-alpha.1"