CVE-2026-29185

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{"bugzilla": {"description": "@backstage/integration: Backstage SCM Integration: Unauthorized access to SCM APIs via path traversal", "id": "2445484", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445484"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-22", "details": ["Backstage is an open framework for building developer portals. Prior to version 1.20.1, a vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials. This issue has been patched in version 1.20.1."], "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-2026-29185", "package_state": [{"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"}], "public_date": "2026-03-07T15:02:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-29185\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-29185\nhttps://github.com/backstage/backstage/security/advisories/GHSA-95v5-prp4-5gv5"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.20.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "backstage", "source": "cna", "vendor": "backstage"}, "product": "backstage", "vendor": "backstage"}], "analysis": {"en": {"generated_at": "2026-04-16T10:56:49.401719+00:00", "value": {"mitigation_remediation": ["Upgrade Backstage to version 1.20.1 or newer, which removes the path traversal handling error.", "Validate all SCM URLs before passing them to integration functions, ensuring no encoded traversal sequences reach the API construction logic.", "Limit the scopes of integration credentials and monitor API calls to detect any anomalous requests to SCM provider endpoints."], "summary": {"action": "Apply Patch", "impact": "Unauthorized access to SCM provider APIs using server-side credentials"}, "threat_synthesis": {"affected_systems": "Backstage open\u2011source framework backed by the Linux Foundation. All installations of backstage:backstage older than 1.20.1 are affected. The vulnerability is tied to the integration components that construct API URLs from SCM URLs.", "description_and_impact": "Prior to version 1.20.1, Backstage\u2019s SCM URL parsing allowed encoded path traversal sequences to be embedded in file paths. When these URLs were processed by integration functions that build API requests, the traversal segments redirected requests to unintended SCM provider API endpoints while still authenticating with the configured server-side integration credentials. This flaw is a classic directory traversal vulnerability (CWE\u201122) that can lead to unauthorized API access or data exposure.", "risk_and_exploitability": "The CVSS score is 2.7, indicating a low severity overall. The EPSS score is less than 1%, showing a very low likelihood of exploitation. The flaw is not listed in the CISA KEV catalog. An attacker would need to supply a crafted SCM URL that contains encoded path traversal sequences. While the attack vector is inferred to involve passing a malicious URL to the integration layer, no external access vector is explicitly documented in the input."}}}}, "created": "2026-03-09T10:05:24.650122+00:00", "updated": "2026-04-16T11:00:10.653923+00:00", "vendors": ["backstage", "backstage$PRODUCT$backstage"]}