data/reports: add GO-2025-3978

  - data/reports/GO-2025-3978.yaml

Fixes golang/vulndb#3978

Change-Id: I2c99926dd98b9d3ec60858f812211945a1aef363
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/705915
Auto-Submit: Ethan Lee <ethanalee@google.com>
Reviewed-by: Markus Kusano <kusano@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
diff --git a/data/osv/GO-2025-3978.json b/data/osv/GO-2025-3978.json
new file mode 100644
index 0000000..67ad24c
--- /dev/null
+++ b/data/osv/GO-2025-3978.json
@@ -0,0 +1,140 @@
+{
+  "schema_version": "1.3.1",
+  "id": "GO-2025-3978",
+  "modified": "0001-01-01T00:00:00Z",
+  "published": "0001-01-01T00:00:00Z",
+  "aliases": [
+    "CVE-2025-9081",
+    "GHSA-f72g-52v7-mg3p"
+  ],
+  "summary": "Mattermost boards plugin fails to restrict download access to files in github.com/mattermost/mattermost-plugin-boards",
+  "details": "Mattermost boards plugin fails to restrict download access to files in github.com/mattermost/mattermost-plugin-boards",
+  "affected": [
+    {
+      "package": {
+        "name": "github.com/mattermost/mattermost-plugin-boards",
+        "ecosystem": "Go"
+      },
+      "ranges": [
+        {
+          "type": "SEMVER",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.0.0-20250716054606-3f3e3becfe1d"
+            }
+          ]
+        }
+      ],
+      "ecosystem_specific": {}
+    },
+    {
+      "package": {
+        "name": "github.com/mattermost/mattermost-server",
+        "ecosystem": "Go"
+      },
+      "ranges": [
+        {
+          "type": "SEMVER",
+          "events": [
+            {
+              "introduced": "9.11.0-rc1+incompatible"
+            },
+            {
+              "fixed": "9.11.18+incompatible"
+            },
+            {
+              "introduced": "10.5.0-rc1+incompatible"
+            },
+            {
+              "fixed": "10.5.9+incompatible"
+            }
+          ]
+        }
+      ],
+      "ecosystem_specific": {}
+    },
+    {
+      "package": {
+        "name": "github.com/mattermost/mattermost-server/v5",
+        "ecosystem": "Go"
+      },
+      "ranges": [
+        {
+          "type": "SEMVER",
+          "events": [
+            {
+              "introduced": "0"
+            }
+          ]
+        }
+      ],
+      "ecosystem_specific": {}
+    },
+    {
+      "package": {
+        "name": "github.com/mattermost/mattermost-server/v6",
+        "ecosystem": "Go"
+      },
+      "ranges": [
+        {
+          "type": "SEMVER",
+          "events": [
+            {
+              "introduced": "0"
+            }
+          ]
+        }
+      ],
+      "ecosystem_specific": {}
+    },
+    {
+      "package": {
+        "name": "github.com/mattermost/mattermost/server/v8",
+        "ecosystem": "Go"
+      },
+      "ranges": [
+        {
+          "type": "SEMVER",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "8.0.0-20250721095935-11c36f4d1e44"
+            }
+          ]
+        }
+      ],
+      "ecosystem_specific": {}
+    }
+  ],
+  "references": [
+    {
+      "type": "ADVISORY",
+      "url": "https://github.com/advisories/GHSA-f72g-52v7-mg3p"
+    },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9081"
+    },
+    {
+      "type": "FIX",
+      "url": "https://github.com/mattermost/mattermost-plugin-boards/commit/3f3e3becfe1d66db0d0f4fd235f04afd6e1ec40b"
+    },
+    {
+      "type": "FIX",
+      "url": "https://github.com/mattermost/mattermost-plugin-boards/pull/114"
+    },
+    {
+      "type": "WEB",
+      "url": "https://mattermost.com/security-updates"
+    }
+  ],
+  "database_specific": {
+    "url": "https://pkg.go.dev/vuln/GO-2025-3978",
+    "review_status": "UNREVIEWED"
+  }
+}
\ No newline at end of file
diff --git a/data/reports/GO-2025-3978.yaml b/data/reports/GO-2025-3978.yaml
new file mode 100644
index 0000000..e9c9a4b
--- /dev/null
+++ b/data/reports/GO-2025-3978.yaml
@@ -0,0 +1,37 @@
+id: GO-2025-3978
+modules:
+    - module: github.com/mattermost/mattermost-plugin-boards
+      versions:
+        - fixed: 0.0.0-20250716054606-3f3e3becfe1d
+    - module: github.com/mattermost/mattermost-server
+      versions:
+        - introduced: 9.11.0-rc1+incompatible
+        - fixed: 9.11.18+incompatible
+        - introduced: 10.5.0-rc1+incompatible
+        - fixed: 10.5.9+incompatible
+      vulnerable_at: 10.5.9-rc4+incompatible
+    - module: github.com/mattermost/mattermost-server/v5
+      vulnerable_at: 5.39.3
+    - module: github.com/mattermost/mattermost-server/v6
+      vulnerable_at: 6.7.2
+    - module: github.com/mattermost/mattermost/server/v8
+      versions:
+        - fixed: 8.0.0-20250721095935-11c36f4d1e44
+summary: Mattermost boards plugin fails to restrict download access to files in github.com/mattermost/mattermost-plugin-boards
+cves:
+    - CVE-2025-9081
+ghsas:
+    - GHSA-f72g-52v7-mg3p
+references:
+    - advisory: https://github.com/advisories/GHSA-f72g-52v7-mg3p
+    - advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-9081
+    - fix: https://github.com/mattermost/mattermost-plugin-boards/commit/3f3e3becfe1d66db0d0f4fd235f04afd6e1ec40b
+    - fix: https://github.com/mattermost/mattermost-plugin-boards/pull/114
+    - web: https://mattermost.com/security-updates
+notes:
+    - fix: 'github.com/mattermost/mattermost-plugin-boards: could not add vulnerable_at: cannot auto-guess when fixed version is 0.0.0 pseudo-version'
+    - fix: 'github.com/mattermost/mattermost/server/v8: could not add vulnerable_at: could not find tagged version between introduced and fixed'
+source:
+    id: GHSA-f72g-52v7-mg3p
+    created: 2025-09-22T18:20:27.312614134Z
+review_status: UNREVIEWED