CVE-2026-106494 (GCVE-0-2026-106494)
Vulnerability from cvelistv5
Published
2026-10-06 20:54
Modified
2026-10-07 15:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| backstage | backstage |
Version: < 1.54.6 |
|||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-106494",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-07T15:31:02.764800Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-07T15:32:00.720Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "backstage",
"vendor": "backstage",
"versions": [
{
"status": "affected",
"version": "\u003c 1.54.6"
}
]
},
{
"product": "backend-defaults",
"vendor": "@backstage",
"versions": [
{
"status": "affected",
"version": "\u003c 0.17.8"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-73",
"description": "CWE-73: External Control of File Name or Path",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-06T20:54:14.590Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/backstage/backstage/security/advisories/GHSA-7649-wm97-w3j3",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/backstage/backstage/security/advisories/GHSA-7649-wm97-w3j3"
},
{
"name": "https://github.com/backstage/backstage/commit/14e925ce5b905dd8daa64c3009722febda76034c",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/backstage/backstage/commit/14e925ce5b905dd8daa64c3009722febda76034c"
},
{
"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"
}
],
"source": {
"advisory": "GHSA-7649-wm97-w3j3",
"discovery": "UNKNOWN"
},
"title": "Backstage: Improper input validation in cloud storage URL readers"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-106494",
"datePublished": "2026-10-06T20:54:14.590Z",
"dateReserved": "2026-10-06T18:46:47.766Z",
"dateUpdated": "2026-10-07T15:32:00.720Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-106494\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-07T15:31:02.764800Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-07T15:31:56.446Z\"}}], \"cna\": {\"title\": \"Backstage: Improper input validation in cloud storage URL readers\", \"source\": {\"advisory\": \"GHSA-7649-wm97-w3j3\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"backstage\", \"product\": \"backstage\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 1.54.6\"}]}, {\"vendor\": \"@backstage\", \"product\": \"backend-defaults\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 0.17.8\"}]}], \"references\": [{\"url\": \"https://github.com/backstage/backstage/security/advisories/GHSA-7649-wm97-w3j3\", \"name\": \"https://github.com/backstage/backstage/security/advisories/GHSA-7649-wm97-w3j3\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/backstage/backstage/commit/14e925ce5b905dd8daa64c3009722febda76034c\", \"name\": \"https://github.com/backstage/backstage/commit/14e925ce5b905dd8daa64c3009722febda76034c\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/backstage/backstage/releases/tag/v1.54.6\", \"name\": \"https://github.com/backstage/backstage/releases/tag/v1.54.6\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-22\", \"description\": \"CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-73\", \"description\": \"CWE-73: External Control of File Name or Path\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-10-06T20:54:14.590Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-106494\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-07T15:32:00.720Z\", \"dateReserved\": \"2026-10-06T18:46:47.766Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-10-06T20:54:14.590Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…