Medium
Backstage: Improper input validation in scaffolder task list ordering
Type: advisorySources: OSV
Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper input validation in scaffolder task list ordering. An authenticated Backstage user with permission to create and read relevant scaffolder tasks may be able to infer confidential task data under specific conditions. Successful exploitation requires retained task secrets, visibility of a target task, knowledge of the secret structure, and repeated requests. This issue is fixed in version 4.1.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-106506
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 07:45 UTC · Revision 1
Source evidence
Backstage: Improper input validation in scaffolder task list ordering
core-osv · Original sourcePublished 6 Oct 2026, 21:44 UTC
Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper input validation in scaffolder task list ordering. An authenticated Backstage user with permission to create and read relevant scaffolder tasks may be able to infer confidential task data under specific conditions. Successful exploitation requires retained task secrets, visibility of a target task, knowledge of the secret structure, and repeated requests. This issue is fixed in version 4.1.0.
osv:CVE-2026-106506
Complete source record
{
"id": "25f047358896c8810b775b741fc8f29bf496562af955cbbf7ca342bbf3cad8ad",
"url": "https://osv.dev/vulnerability/CVE-2026-106506",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Backstage: Improper input validation in scaffolder task list ordering",
"summary": "Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper input validation in scaffolder task list ordering. An authenticated Backstage user with permission to create and read relevant scaffolder tasks may be able to infer confidential task data under specific conditions. Successful exploitation requires retained task secrets, visibility of a target task, knowledge of the secret structure, and repeated requests. This issue is fixed in version 4.1.0.",
"evidence": "osv:CVE-2026-106506",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-106506",
"aliases": [
"CVE-2026-106506",
"GHSA-vwp5-f99x-x3rq"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
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"type": "GIT",
"events": [
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{
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"source": "CPE_RANGE"
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"source": "REFERENCES_COMMIT"
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"modified": "2026-10-28T02:30:34.015796105Z",
"provider": "osv",
"references": [
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"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106506.json",
"https://github.com/backstage/backstage/security/advisories/GHSA-vwp5-f99x-x3rq",
"https://nvd.nist.gov/vuln/detail/CVE-2026-106506",
"https://github.com/backstage/backstage/commit/e673a869449874a9169e8f89852e75e862011b93"
],
"provider_metadata": {
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],
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{
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{
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"strategy": "StringRangeExpression"
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}
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"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 500946,
"published_at": "2026-10-06T21:44:31.904+00:00"
}