CVE-2026-47187 (GCVE-0-2026-47187)
Vulnerability from cvelistv5 – Published: 2026-08-19 14:41 – Updated: 2026-08-20 18:29
VLAI
EPSS
VEX
Title
SSHFS Symlink Escape: Rogue SFTP Server → Local File Read/Write
Summary
SSHFS is a network filesystem client for connecting to SSH servers. Prior to version 3.7.6, a rogue SFTP server can return absolute symlink targets or relative targets containing parent-directory components that SSHFS passes through FUSE for resolution by the client kernel against the local filesystem. The documented transform_symlinks mitigation does not contain relative targets because transform_symlink() returns early at sshfs.c:2181, while sshfs_readlink() at sshfs.c:2234 to sshfs.c:2236 otherwise copies the server-supplied link target to the kernel. A victim or victim-side tool that follows such a link through ordinary operations such as cp, rsync, backup tooling, or an editor can disclose readable local files back to the server or write server-controlled content to writable local files, potentially including startup or scheduled-task files. This issue is fixed in version 3.7.6.
Severity
9.3 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 03:56 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libfuse/sshfs/security/advisor… | x_refsource_CONFIRM |
| https://github.com/libfuse/sshfs/pull/361 | x_refsource_MISC |
| https://github.com/libfuse/sshfs/commit/bcd132f17… | x_refsource_MISC |
| https://github.com/libfuse/sshfs/releases/tag/ssh… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47187",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-20T03:56:49.576196Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-20T18:29:10.307Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "sshfs",
"vendor": "libfuse",
"versions": [
{
"status": "affected",
"version": "\u003c 3.7.6"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "SSHFS is a network filesystem client for connecting to SSH servers. Prior to version 3.7.6, a rogue SFTP server can return absolute symlink targets or relative targets containing parent-directory components that SSHFS passes through FUSE for resolution by the client kernel against the local filesystem. The documented transform_symlinks mitigation does not contain relative targets because transform_symlink() returns early at sshfs.c:2181, while sshfs_readlink() at sshfs.c:2234 to sshfs.c:2236 otherwise copies the server-supplied link target to the kernel. A victim or victim-side tool that follows such a link through ordinary operations such as cp, rsync, backup tooling, or an editor can disclose readable local files back to the server or write server-controlled content to writable local files, potentially including startup or scheduled-task files. This issue is fixed in version 3.7.6."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T14:41:57.512Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357"
},
{
"name": "https://github.com/libfuse/sshfs/pull/361",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libfuse/sshfs/pull/361"
},
{
"name": "https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26"
},
{
"name": "https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6"
}
],
"source": {
"advisory": "GHSA-pjv6-2c3f-r357",
"discovery": "UNKNOWN"
},
"title": "SSHFS Symlink Escape: Rogue SFTP Server \u2192 Local File Read/Write"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47187",
"datePublished": "2026-08-19T14:41:57.512Z",
"dateReserved": "2026-05-18T22:07:37.435Z",
"dateUpdated": "2026-08-20T18:29:10.307Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-47187",
"date": "2026-09-19",
"epss": "0.00415",
"percentile": "0.35433"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "sshfs",
"vendor": "libfuse",
"versions": [
{
"status": "affected",
"version": "\u003c 3.7.6"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "SSHFS is a network filesystem client for connecting to SSH servers. Prior to version 3.7.6, a rogue SFTP server can return absolute symlink targets or relative targets containing parent-directory components that SSHFS passes through FUSE for resolution by the client kernel against the local filesystem. The documented transform_symlinks mitigation does not contain relative targets because transform_symlink() returns early at sshfs.c:2181, while sshfs_readlink() at sshfs.c:2234 to sshfs.c:2236 otherwise copies the server-supplied link target to the kernel. A victim or victim-side tool that follows such a link through ordinary operations such as cp, rsync, backup tooling, or an editor can disclose readable local files back to the server or write server-controlled content to writable local files, potentially including startup or scheduled-task files. This issue is fixed in version 3.7.6."
}
],
"id": "CVE-2026-47187",
"lastModified": "2026-09-09T21:13:25.910",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.8,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-47187",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-20T03:56:49.576196Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-19T15:17:05.310",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/libfuse/sshfs/pull/361"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-59"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"suse_vex": {
"aggregate_severity": "critical",
"current_release_date": "2026-08-21T00:59:37Z",
"cve": "CVE-2026-47187",
"id": "CVE-2026-47187",
"initial_release_date": "2026-06-02T01:37:07Z",
"product_status:recommended": "3",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-47187",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-47187.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47187",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-20T03:56:49.576196Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-20T18:29:07.908Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "sshfs",
"vendor": "libfuse",
"versions": [
{
"status": "affected",
"version": "\u003c 3.7.6"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "SSHFS is a network filesystem client for connecting to SSH servers. Prior to version 3.7.6, a rogue SFTP server can return absolute symlink targets or relative targets containing parent-directory components that SSHFS passes through FUSE for resolution by the client kernel against the local filesystem. The documented transform_symlinks mitigation does not contain relative targets because transform_symlink() returns early at sshfs.c:2181, while sshfs_readlink() at sshfs.c:2234 to sshfs.c:2236 otherwise copies the server-supplied link target to the kernel. A victim or victim-side tool that follows such a link through ordinary operations such as cp, rsync, backup tooling, or an editor can disclose readable local files back to the server or write server-controlled content to writable local files, potentially including startup or scheduled-task files. This issue is fixed in version 3.7.6."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T14:41:57.512Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/libfuse/sshfs/security/advisories/GHSA-pjv6-2c3f-r357"
},
{
"name": "https://github.com/libfuse/sshfs/pull/361",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libfuse/sshfs/pull/361"
},
{
"name": "https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libfuse/sshfs/commit/bcd132f17ccf1b8592a229df797c9b08883fec26"
},
{
"name": "https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libfuse/sshfs/releases/tag/sshfs-3.7.6"
}
],
"source": {
"advisory": "GHSA-pjv6-2c3f-r357",
"discovery": "UNKNOWN"
},
"title": "SSHFS Symlink Escape: Rogue SFTP Server \u2192 Local File Read/Write"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47187",
"datePublished": "2026-08-19T14:41:57.512Z",
"dateReserved": "2026-05-18T22:07:37.435Z",
"dateUpdated": "2026-08-20T18:29:10.307Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…