CVE-2026-103401 (GCVE-0-2026-103401)
Vulnerability from cvelistv5
Published
2026-10-28 16:34
Modified
2026-10-28 16:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
An Improper Link Resolution Before File Access ('Link Following') vulnerability in the unauthenticated web server handlers in Juniper Networks Session Smart Router and Session Smart Conductor allows a local unprivileged user to overwrite arbitrary files as root via unauthenticated API endpoints.
This vulnerability can be exploited on Mist-managed routers and on unmanaged Routers that have not yet been onboarded to a Conductor. Routers already managed by Conductor are not affected.
References
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Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Session Smart Router |
Version: 0 < 7.0.5 Version: 7.1.0 < 7.1.7 Version: 7.2.0 < 7.2.3 |
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{
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"affected": [
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"vendor": "Juniper Networks",
"versions": [
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"status": "affected",
"version": "7.1.0",
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"version": "7.2.0",
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"datePublic": "2026-10-28T16:00:00.000Z",
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"value": "An Improper Link Resolution Before File Access (\u0027Link Following\u0027) vulnerability in the unauthenticated web server handlers in Juniper Networks Session Smart Router and Session Smart Conductor\u0026nbsp;allows a local unprivileged user to overwrite arbitrary files as root via unauthenticated API endpoints.\u003cbr\u003e\u003cbr\u003eThis vulnerability can be exploited on Mist-managed routers and on unmanaged Routers that have not yet been onboarded to a Conductor. Routers already managed by Conductor are not affected.\u003cbr\u003e"
}
],
"value": "An Improper Link Resolution Before File Access (\u0027Link Following\u0027) vulnerability in the unauthenticated web server handlers in Juniper Networks Session Smart Router and Session Smart Conductor\u00a0allows a local unprivileged user to overwrite arbitrary files as root via unauthenticated API endpoints.\n\nThis vulnerability can be exploited on Mist-managed routers and on unmanaged Routers that have not yet been onboarded to a Conductor. Routers already managed by Conductor are not affected."
}
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"exploits": [
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"supportingMedia": [
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"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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"metrics": [
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"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"providerMetadata": {
"dateUpdated": "2026-10-28T16:34:44.566Z",
"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"shortName": "juniper"
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"references": [
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"tags": [
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"url": "https://supportportal.juniper.net/JSA112183"
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],
"solutions": [
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"lang": "en",
"supportingMedia": [
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"value": "The following software releases of Session Smart Router and Session Smart Conductor have been updated to resolve these specific issues:\u003cbr\u003e\u003cul\u003e\u003cli\u003e7.0.5 \n\nand all subsequent releases;\u003c/li\u003e\u003cli\u003e7.1.7 \n\nand all subsequent releases;\u003c/li\u003e\u003cli\u003e7.2.3 and all subsequent releases.\u003c/li\u003e\u003c/ul\u003e\n\n\u003cbr\u003e\n\n\u003cbr\u003e"
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"value": "The following software releases of Session Smart Router and Session Smart Conductor have been updated to resolve these specific issues:\n * 7.0.5 \n\nand all subsequent releases;\n * 7.1.7 \n\nand all subsequent releases;\n * 7.2.3 and all subsequent releases."
}
],
"source": {
"advisory": "JSA112183",
"defect": [
"I95-65017"
],
"discovery": "INTERNAL"
},
"title": "Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root",
"workarounds": [
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"cveId": "CVE-2026-103401",
"datePublished": "2026-10-28T16:34:44.566Z",
"dateReserved": "2026-09-30T14:33:03.168Z",
"dateUpdated": "2026-10-28T16:34:44.566Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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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.
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