{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-106499", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-06T18:46:47.766Z", "datePublished": "2026-10-06T21:25:56.166Z", "dateUpdated": "2026-10-07T17:46:09.812Z"}, "containers": {"cna": {"title": "Backstage: Secret-derived values may be exposed in scaffolder task logs", "problemTypes": [{"descriptions": [{"cweId": "CWE-532", "lang": "en", "description": "CWE-532: Insertion of Sensitive Information into Log File", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg"}, {"name": "https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70"}, {"name": "https://github.com/backstage/backstage/releases/tag/v1.54.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/releases/tag/v1.54.6"}], "affected": [{"vendor": "backstage", "product": "backstage", "versions": [{"version": "< 1.54.6", "status": "affected"}]}, {"vendor": "@backstage", "product": "plugin-scaffolder-backend", "versions": [{"version": "< 4.1.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-06T21:25:56.166Z"}, "descriptions": [{"lang": "en", "value": "Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0."}], "source": {"advisory": "GHSA-mfvq-x7vr-rgqg", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-07T17:45:56.549598Z", "id": "CVE-2026-106499", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T17:46:09.812Z"}}]}}

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{"bugzilla": {"description": "plugin-scaffolder-backend: Backstage: Information disclosure via secret leakage in Scaffolder task logs", "id": "2547214", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547214"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-538", "details": ["A flaw was found in the Backstage Scaffolder backend. In environments configured with default environment secrets, an authenticated attacker with permissions to create or modify templates can cause secret-derived values to be recorded in task logs. This issue leads to information disclosure, allowing any user with access to task execution logs to view sensitive credentials."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-106499", "package_state": [{"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Fix deferred", "package_name": "rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Fix deferred", "package_name": "rhdh/rhdh-hub-rhel9", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform/automation-portal", "product_name": "Self-service automation portal 2"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform/bootc-automation-portal-rhel9", "product_name": "Self-service automation portal 2"}], "public_date": "2026-10-06T21:25:56Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106499\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106499\nhttps://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70\nhttps://github.com/backstage/backstage/releases/tag/v1.54.6\nhttps://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg"], "statement": "This vulnerability is rated as Moderate because successful exploitation requires elevated privileges to create or alter software templates, alongside a specific configuration defining sensitive environment secrets. In typical Red Hat Developer Hub deployments, template authoring is restricted to trusted administrators or catalog managers rather than general end-users. Although exposed task execution records could reveal sensitive values to unauthorized viewers, the necessity of privileged template management access significantly limits the attack vector.", "threat_severity": "Moderate"}

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