data/reports: add report for CVE-2026-56854

Fixes golang/vulndb#6303

Change-Id: I3ee107d623c8ef3a6d8458396cf826db762659c8
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/823244
Reviewed-by: Neal Patel <nealpatel@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Neal Patel <neal@golang.org>
Reviewed-by: Ian Alexander <jitsu@google.com>
diff --git a/data/cve/v5/GO-2026-6303.json b/data/cve/v5/GO-2026-6303.json
new file mode 100644
index 0000000..bb873b7
--- /dev/null
+++ b/data/cve/v5/GO-2026-6303.json
@@ -0,0 +1,73 @@
+{
+  "dataType": "CVE_RECORD",
+  "dataVersion": "5.0",
+  "cveMetadata": {
+    "cveId": "CVE-2026-56854"
+  },
+  "containers": {
+    "cna": {
+      "providerMetadata": {
+        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc"
+      },
+      "title": "Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh",
+      "descriptions": [
+        {
+          "lang": "en",
+          "value": "The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback."
+        }
+      ],
+      "affected": [
+        {
+          "vendor": "golang.org/x/crypto",
+          "product": "golang.org/x/crypto/ssh",
+          "collectionURL": "https://pkg.go.dev",
+          "packageName": "golang.org/x/crypto/ssh",
+          "versions": [
+            {
+              "version": "0",
+              "lessThan": "0.55.0",
+              "status": "affected",
+              "versionType": "semver"
+            }
+          ],
+          "programRoutines": [
+            {
+              "name": "connection.serverAuthenticate"
+            },
+            {
+              "name": "NewServerConn"
+            }
+          ],
+          "defaultStatus": "unaffected"
+        }
+      ],
+      "problemTypes": [
+        {
+          "descriptions": [
+            {
+              "lang": "en",
+              "description": "CWE-863: Incorrect Authorization"
+            }
+          ]
+        }
+      ],
+      "references": [
+        {
+          "url": "https://go.dev/issue/80213"
+        },
+        {
+          "url": "https://go.dev/cl/797040"
+        },
+        {
+          "url": "https://pkg.go.dev/vuln/GO-2026-6303"
+        }
+      ],
+      "credits": [
+        {
+          "lang": "en",
+          "value": "Longwei Wang (@gn00295120)"
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/data/osv/GO-2026-6303.json b/data/osv/GO-2026-6303.json
new file mode 100644
index 0000000..f50d00c
--- /dev/null
+++ b/data/osv/GO-2026-6303.json
@@ -0,0 +1,62 @@
+{
+  "schema_version": "1.3.1",
+  "id": "GO-2026-6303",
+  "modified": "0001-01-01T00:00:00Z",
+  "published": "0001-01-01T00:00:00Z",
+  "aliases": [
+    "CVE-2026-56854"
+  ],
+  "summary": "Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh",
+  "details": "The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.",
+  "affected": [
+    {
+      "package": {
+        "name": "golang.org/x/crypto",
+        "ecosystem": "Go"
+      },
+      "ranges": [
+        {
+          "type": "SEMVER",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.55.0"
+            }
+          ]
+        }
+      ],
+      "ecosystem_specific": {
+        "imports": [
+          {
+            "path": "golang.org/x/crypto/ssh",
+            "symbols": [
+              "NewServerConn",
+              "connection.serverAuthenticate"
+            ]
+          }
+        ]
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "REPORT",
+      "url": "https://go.dev/issue/80213"
+    },
+    {
+      "type": "FIX",
+      "url": "https://go.dev/cl/797040"
+    }
+  ],
+  "credits": [
+    {
+      "name": "Longwei Wang (@gn00295120)"
+    }
+  ],
+  "database_specific": {
+    "url": "https://pkg.go.dev/vuln/GO-2026-6303",
+    "review_status": "REVIEWED"
+  }
+}
\ No newline at end of file
diff --git a/data/reports/GO-2026-6303.yaml b/data/reports/GO-2026-6303.yaml
new file mode 100644
index 0000000..b806e72
--- /dev/null
+++ b/data/reports/GO-2026-6303.yaml
@@ -0,0 +1,35 @@
+id: GO-2026-6303
+modules:
+    - module: golang.org/x/crypto
+      versions:
+        - fixed: 0.55.0
+      vulnerable_at: 0.54.0
+      packages:
+        - package: golang.org/x/crypto/ssh
+          symbols:
+            - connection.serverAuthenticate
+          derived_symbols:
+            - NewServerConn
+summary: Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh
+description: |
+    The source-address critical option in the Permissions returned
+    by an authentication callback was only enforced for the
+    PublicKeyCallback and VerifiedPublicKeyCallback paths, extending
+    the fix for CVE-2026-46595. Permissions returned by the
+    PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback,
+    and GSSAPIWithMICConfig.AllowLogin callbacks were not validated
+    against the client's remote address, so a source-address
+    restriction set by those callbacks was silently ignored. The
+    check is now applied to the Permissions returned by any
+    authentication callback.
+credits:
+    - Longwei Wang (@gn00295120)
+references:
+    - report: https://go.dev/issue/80213
+    - fix: https://go.dev/cl/797040
+cve_metadata:
+    id: CVE-2026-56854
+    cwe: 'CWE-863: Incorrect Authorization'
+source:
+    id: go-security-team
+review_status: REVIEWED