Publish GHSA-8qp7-fhr9-fw53

Author: advisory-database[bot]

advisories/github-reviewed/2026/03/GHSA-8qp7-fhr9-fw53/GHSA-8qp7-fhr9-fw53.json

@@ -0,0 +1,68 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-8qp7-fhr9-fw53",
+  "modified": "2026-03-05T00:23:51Z",
+  "published": "2026-03-05T00:23:51Z",
+  "aliases": [
+    "CVE-2026-29184"
+  ],
+  "summary": "@backstage/plugin-scaffolder-backend Vulnerable to Potential Session Token Exfiltration via Log Redaction Bypass",
+  "details": "### Impact\n\nA malicious scaffolder template can bypass the log redaction mechanism to exfiltrate secrets provided run through task event logs.\n\nThe attack requires:\n  - The ability to register a template in the catalog\n  - A victim who executes the malicious template\n\n### Patches\n  Patched in `@backstage/plugin-scaffolder-backend` version 3.1.4\n\n### Workarounds\n  - Implement a custom permission policy that restricts scaffolder.task.read so users can only read their own task logs\n  - Restrict who can register templates in the catalog to trusted users only\n\n### Resources\n  - Backstage Scaffolder permissions documentation: https://backstage.io/docs/permissions/plugin-authors/01-setup/\n  - Backstage Threat Model: https://backstage.io/docs/overview/threat-model/",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "@backstage/plugin-scaffolder-backend"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "3.1.4"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 3.1.3"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/backstage/backstage/security/advisories/GHSA-8qp7-fhr9-fw53"
+    },
+    {
+      "type": "WEB",
+      "url": "https://backstage.io/docs/overview/threat-model"
+    },
+    {
+      "type": "WEB",
+      "url": "https://backstage.io/docs/permissions/plugin-authors/01-setup"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/backstage/backstage"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-532"
+    ],
+    "severity": "LOW",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-03-05T00:23:51Z",
+    "nvd_published_at": null
+  }
+}