CVE-2026-106505 (GCVE-0-2026-106505)
Vulnerability from cvelistv5
Published
2026-10-06 21:43
Modified
2026-10-07 16:14
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| backstage | backstage |
Version: < 1.50.5 Version: >= 1.51.0-next.0, < 1.54.6 |
|||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-106505",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-07T16:12:41.246162Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-07T16:14:14.192Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "backstage",
"vendor": "backstage",
"versions": [
{
"status": "affected",
"version": "\u003c 1.50.5"
},
{
"status": "affected",
"version": "\u003e= 1.51.0-next.0, \u003c 1.54.6"
}
]
},
{
"product": "plugin-techdocs-node",
"vendor": "@backstage",
"versions": [
{
"status": "affected",
"version": "\u003c 1.14.6"
},
{
"status": "affected",
"version": "\u003e= 1.15.0, \u003c 1.15.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-426",
"description": "CWE-426: Untrusted Search Path",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-436",
"description": "CWE-436: Interpretation Conflict",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-06T21:43:08.370Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx"
},
{
"name": "https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9"
},
{
"name": "https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db"
},
{
"name": "https://github.com/backstage/backstage/releases/tag/v1.50.5",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/backstage/backstage/releases/tag/v1.50.5"
},
{
"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-p75x-jh7p-ppcx",
"discovery": "UNKNOWN"
},
"title": "Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-106505",
"datePublished": "2026-10-06T21:43:08.370Z",
"dateReserved": "2026-10-06T18:46:47.766Z",
"dateUpdated": "2026-10-07T16:14:14.192Z",
"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-2026-106505\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-07T16:12:41.246162Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-07T16:13:39.159Z\"}}], \"cna\": {\"title\": \"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend\", \"source\": {\"advisory\": \"GHSA-p75x-jh7p-ppcx\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 7.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"backstage\", \"product\": \"backstage\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 1.50.5\"}, {\"status\": \"affected\", \"version\": \"\u003e= 1.51.0-next.0, \u003c 1.54.6\"}]}, {\"vendor\": \"@backstage\", \"product\": \"plugin-techdocs-node\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 1.14.6\"}, {\"status\": \"affected\", \"version\": \"\u003e= 1.15.0, \u003c 1.15.4\"}]}], \"references\": [{\"url\": \"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx\", \"name\": \"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9\", \"name\": \"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db\", \"name\": \"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/backstage/backstage/releases/tag/v1.50.5\", \"name\": \"https://github.com/backstage/backstage/releases/tag/v1.50.5\", \"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 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-426\", \"description\": \"CWE-426: Untrusted Search Path\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-436\", \"description\": \"CWE-436: Interpretation Conflict\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-10-06T21:43:08.370Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-106505\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-07T16:14:14.192Z\", \"dateReserved\": \"2026-10-06T18:46:47.766Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-10-06T21:43:08.370Z\", \"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…