Common Weakness Enumeration
CWE-61
AllowedUNIX Symbolic Link (Symlink) Following
Abstraction: Compound · Status: Incomplete
The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
270 vulnerabilities reference this CWE, most recent first.
CVE-2019-16775 (GCVE-0-2019-16775)
Vulnerability from cvelistv5 – Published: 2019-12-13 00:55 – Updated: 2024-08-05 01:24
VLAI
EPSS
VEX
Title
Unauthorized File Access in npm CLI before before version 6.13.3
Summary
Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It is possible for packages to create symlinks to files outside of thenode_modules folder through the bin field upon installation. A properly constructed entry in the package.json bin field would allow a package publisher to create a symlink pointing to arbitrary files on a user's system when the package is installed. This behavior is still possible through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.
Severity
7.7 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
11 references
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|---|---|
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHEA-2020:0330 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0573 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0579 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0597 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0602 | vendor-advisoryx_refsource_REDHAT |
| https://www.oracle.com/security-alerts/cpujan2020.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://github.com/npm/cli/security/advisories/GH… | x_refsource_CONFIRM |
| https://blog.npmjs.org/post/189618601100/binary-p… | x_refsource_MISC |
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CVE-2019-11251 (GCVE-0-2019-11251)
Vulnerability from cvelistv5 – Published: 2020-02-03 15:35 – Updated: 2024-08-04 22:48
VLAI
EPSS
VEX
Title
kubectl cp allows symlink directory traversal
Summary
The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.
Severity
4.8 (Medium)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kubernetes/kubernetes/issues/87773 | x_refsource_CONFIRM |
| https://groups.google.com/d/msg/kubernetes-announ… | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | Kubernetes |
Affected:
prior to 1.13.11
Affected: prior to 1.14.7 Affected: prior to 1.15.4 Affected: 1.1 Affected: 1.2 Affected: 1.3 Affected: 1.4 Affected: 1.5 Affected: 1.6 Affected: 1.7 Affected: 1.8 Affected: 1.9 Affected: 1.10 Affected: 1.11 Affected: 1.12 |
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CVE-2019-11249 (GCVE-0-2019-11249)
Vulnerability from cvelistv5 – Published: 2019-08-29 00:26 – Updated: 2024-09-16 18:19
VLAI
EPSS
VEX
Title
kubectl cp allows symlink directory traversal
Summary
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.
Severity
4.8 (Medium)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://groups.google.com/d/msg/kubernetes-securi… | mailing-listx_refsource_MLIST |
| https://github.com/kubernetes/kubernetes/issues/80984 | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2019091… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHBA-2019:2816 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHBA-2019:2794 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHBA-2019:2824 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:3239 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:3811 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | Kubernetes |
Affected:
prior to 1.13.9
Affected: prior to 1.14.5 Affected: prior to 1.15.2 Affected: 1.1 Affected: 1.2 Affected: 1.4 Affected: 1.5 Affected: 1.6 Affected: 1.7 Affected: 1.8 Affected: 1.9 Affected: 1.10 Affected: 1.11 Affected: 1.12 |
Date Public
2019-08-05 00:00
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CVE-2019-11246 (GCVE-0-2019-11246)
Vulnerability from cvelistv5 – Published: 2019-08-29 00:23 – Updated: 2024-09-16 23:01
VLAI
EPSS
VEX
Title
kubectl cp allows symlink directory traversal
Summary
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.12.9, versions prior to 1.13.6, versions prior to 1.14.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11.
Severity
6.4 (Medium)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/kubernetes/kubernetes/pull/76788 | x_refsource_CONFIRM |
| https://groups.google.com/forum/#%21topic/kuberne… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2019091… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | Kubernetes |
Affected:
prior to 1.12.9
Affected: prior to 1.13.6 Affected: prior to 1.14.2 Affected: 1.1 Affected: 1.2 Affected: 1.4 Affected: 1.5 Affected: 1.6 Affected: 1.7 Affected: 1.8 Affected: 1.9 Affected: 1.10 Affected: 1.11 |
Date Public
2019-06-21 00:00
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"lang": "eng",
"value": "The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user\u2019s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user\u2019s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.12.9, versions prior to 1.13.6, versions prior to 1.14.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11."
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CVE-2017-14798 (GCVE-0-2017-14798)
Vulnerability from cvelistv5 – Published: 2018-03-01 19:00 – Updated: 2024-09-16 19:20
VLAI
EPSS
VEX
Title
local privilege escalation in SUSE postgresql init script
Summary
A race condition in the postgresql init script could be used by attackers able to access the postgresql account to escalate their privileges to root.
Severity
7.3 (High)
CWE
- creation of directory could follow symlinks
- CWE-61
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/45184/ | exploitx_refsource_EXPLOIT-DB |
| https://bugzilla.suse.com/show_bug.cgi?id=1062722 | x_refsource_CONFIRM |
| https://www.suse.com/de-de/security/cve/CVE-2017-14798/ | x_refsource_CONFIRM |
| http://lists.suse.com/pipermail/sle-security-upda… | vendor-advisoryx_refsource_SUSE |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| suse | postgresql-init |
Affected:
unspecified , ≤ 9.4-0.5.3.1
(custom)
|
Date Public
2017-11-27 00:00
Credits
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GHSA-2C78-596M-9G6P
Vulnerability from github – Published: 2024-03-28 21:30 – Updated: 2024-03-28 21:30
VLAI
Details
Dell PowerScale OneFS versions 9.4.0.x through 9.7.0.x contains an UNIX symbolic link (symlink) following vulnerability. A local high privileged attacker could potentially exploit this vulnerability, leading to denial of service, information tampering.
Severity
6.0 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-25953"
],
"database_specific": {
"cwe_ids": [
"CWE-59",
"CWE-61"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-28T19:15:47Z",
"severity": "MODERATE"
},
"details": "Dell PowerScale OneFS versions 9.4.0.x through 9.7.0.x contains an UNIX symbolic link (symlink) following vulnerability. A local high privileged attacker could potentially exploit this vulnerability, leading to denial of service, information tampering.",
"id": "GHSA-2c78-596m-9g6p",
"modified": "2024-03-28T21:30:31Z",
"published": "2024-03-28T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25953"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000223366/dsa-2024-115-security-update-for-dell-powerscale-onefs-for-multiple-security-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2H3H-Q99F-3FHC
Vulnerability from github – Published: 2021-08-31 16:04 – Updated: 2022-08-15 20:08
VLAI
Summary
@npmcli/arborist vulnerable to UNIX Symbolic Link (Symlink) Following
Details
Impact
Arbitrary File Creation, Arbitrary File Overwrite, Arbitrary Code Execution
@npmcli/arborist, the library that calculates dependency trees and manages the node_modules folder hierarchy for the npm command line interface, aims to guarantee that package dependency contracts will be met, and the extraction of package contents will always be performed into the expected folder.
This is, in part, accomplished by resolving dependency specifiers defined in package.json manifests for dependencies with a specific name, and nesting folders to resolve conflicting dependencies.
When multiple dependencies differ only in the case of their name, Arborist's internal data structure saw them as separate items that could coexist within the same level in the node_modules hierarchy. However, on case-insensitive file systems (such as macOS and Windows), this is not the case. Combined with a symlink dependency such as file:/some/path, this allowed an attacker to create a situation in which arbitrary contents could be written to any location on the filesystem.
For example, a package pwn-a could define a dependency in their package.json file such as "foo": "file:/some/path". Another package, pwn-b could define a dependency such as FOO: "file:foo.tgz". On case-insensitive file systems, if pwn-a was installed, and then pwn-b was installed afterwards, the contents of foo.tgz would be written to /some/path, and any existing contents of /some/path would be removed.
Anyone using npm v7.20.6 or earlier on a case-insensitive filesystem is potentially affected.
Patches
2.8.2 (included in npm v7.20.7 and above)
Fix and Caveats
There are two parts to the fix:
- Immediately prior to extraction, if the target folder is not a directory, it is moved aside. (If the installation fails, filesystem entries moved aside in this manner are moved back as part of the rollback process.)
- The
childrenmap that represents child nodes in the tree is replaced with a case-insensitive map object, such thatnode.children.get('foo')andnode.children.get('FOO')will return the same object, enabling Arborist to detect and handle this class of tree collision.
This second item imposes a caveat on case sensitive filesystems where two packages with names which differ only in case may already exist at the same level in the tree, causing unpredictable behavior in this rare edge case. Note that in such cases, the package-lock.json already creates a situation which is hazardous to use on case-sensitive filesystems, and will likely lead to other problems.
If affected by this caveat, please run npm update to rebuild your tree and generate a new package-lock.json file.
Severity
8.2 (High)
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "@npmcli/arborist"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.8.2"
}
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"CWE-59",
"CWE-61"
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"github_reviewed_at": "2021-08-31T16:02:46Z",
"nvd_published_at": "2021-08-31T17:15:00Z",
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"details": "### Impact\n\nArbitrary File Creation, Arbitrary File Overwrite, Arbitrary Code Execution\n\n`@npmcli/arborist`, the library that calculates dependency trees and manages the `node_modules` folder hierarchy for the npm command line interface, aims to guarantee that package dependency contracts will be met, and the extraction of package contents will always be performed into the expected folder.\n\nThis is, in part, accomplished by resolving dependency specifiers defined in `package.json` manifests for dependencies with a specific name, and nesting folders to resolve conflicting dependencies.\n\nWhen multiple dependencies differ only in the case of their name, Arborist\u0027s internal data structure saw them as separate items that could coexist within the same level in the `node_modules` hierarchy. However, on case-insensitive file systems (such as macOS and Windows), this is not the case. Combined with a symlink dependency such as `file:/some/path`, this allowed an attacker to create a situation in which arbitrary contents could be written to any location on the filesystem.\n\nFor example, a package `pwn-a` could define a dependency in their `package.json` file such as `\"foo\": \"file:/some/path\"`. Another package, `pwn-b` could define a dependency such as `FOO: \"file:foo.tgz\"`. On case-insensitive file systems, if `pwn-a` was installed, and then `pwn-b` was installed afterwards, the contents of `foo.tgz` would be written to `/some/path`, and any existing contents of `/some/path` would be removed.\n\nAnyone using npm v7.20.6 or earlier on a case-insensitive filesystem is potentially affected.\n\n### Patches\n\n2.8.2 (included in npm v7.20.7 and above)\n\n### Fix and Caveats\n\nThere are two parts to the fix:\n\n1. Immediately prior to extraction, if the target folder is not a directory, it is moved aside. (If the installation fails, filesystem entries moved aside in this manner are moved back as part of the rollback process.)\n2. The `children` map that represents child nodes in the tree is replaced with a case-insensitive map object, such that `node.children.get(\u0027foo\u0027)` and `node.children.get(\u0027FOO\u0027)` will return the same object, enabling Arborist to detect and handle this class of tree collision.\n\nThis second item imposes a caveat on case _sensitive_ filesystems where two packages with names which differ only in case may already exist at the same level in the tree, causing unpredictable behavior in this rare edge case. Note that in such cases, the `package-lock.json` already creates a situation which is hazardous to use on case-sensitive filesystems, and will likely lead to other problems.\n\nIf affected by this caveat, please run `npm update` to rebuild your tree and generate a new `package-lock.json` file.",
"id": "GHSA-2h3h-q99f-3fhc",
"modified": "2022-08-15T20:08:31Z",
"published": "2021-08-31T16:04:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/npm/arborist/security/advisories/GHSA-2h3h-q99f-3fhc"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39134"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
},
{
"type": "PACKAGE",
"url": "https://github.com/npm/arborist"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/package/@npmcli/arborist"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "@npmcli/arborist vulnerable to UNIX Symbolic Link (Symlink) Following"
}
GHSA-2P49-45HJ-7MC9
Vulnerability from github – Published: 2026-01-21 22:40 – Updated: 2026-01-22 15:41
VLAI
Summary
@backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass
Details
Impact
The resolveSafeChildPath utility function in @backstage/backend-plugin-api, which is used to prevent path traversal attacks, failed to properly validate symlink chains and dangling symlinks. An attacker could bypass the path validation by:
- Symlink chains: Creating
link1 → link2 → /outsidewhere intermediate symlinks eventually resolve outside the allowed directory - Dangling symlinks: Creating symlinks pointing to non-existent paths outside the base directory, which would later be created during file operations
This function is used by Scaffolder actions and other backend components to ensure file operations stay within designated directories.
Patches
This vulnerability is fixed in @backstage/backend-plugin-api version 0.1.17. Users should upgrade to this version or later.
Workarounds
- Run Backstage in a containerised environment with limited filesystem access
- Restrict template creation to trusted users
Severity
6.3 (Medium)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 0.1.16"
},
"package": {
"ecosystem": "npm",
"name": "@backstage/cli-common"
},
"ranges": [
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}
],
"aliases": [
"CVE-2026-24047"
],
"database_specific": {
"cwe_ids": [
"CWE-59",
"CWE-61"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-21T22:40:51Z",
"nvd_published_at": "2026-01-21T23:15:53Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nThe `resolveSafeChildPath` utility function in `@backstage/backend-plugin-api`, which is used to prevent path traversal attacks, failed to properly validate symlink chains and dangling symlinks. An attacker could bypass the path validation by:\n\n1. **Symlink chains**: Creating `link1 \u2192 link2 \u2192 /outside` where intermediate symlinks eventually resolve outside the allowed directory\n2. **Dangling symlinks**: Creating symlinks pointing to non-existent paths outside the base directory, which would later be created during file operations\n\nThis function is used by Scaffolder actions and other backend components to ensure file operations stay within designated directories.\n\n### Patches\n\nThis vulnerability is fixed in `@backstage/backend-plugin-api` version 0.1.17. Users should upgrade to this version or later.\n\n### Workarounds\n\n- Run Backstage in a containerised environment with limited filesystem access\n- Restrict template creation to trusted users",
"id": "GHSA-2p49-45hj-7mc9",
"modified": "2026-01-22T15:41:11Z",
"published": "2026-01-21T22:40:51Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/backstage/backstage/security/advisories/GHSA-2p49-45hj-7mc9"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24047"
},
{
"type": "WEB",
"url": "https://github.com/backstage/backstage/commit/ae4dd5d1572a4f639e1a466fd982656b50f8e692"
},
{
"type": "PACKAGE",
"url": "https://github.com/backstage/backstage"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "@backstage/cli-common has a possible `resolveSafeChildPath` Symlink Chain Bypass"
}
GHSA-35MW-5VVR-VRXC
Vulnerability from github – Published: 2026-05-05 12:31 – Updated: 2026-05-08 20:04
VLAI
Summary
OpenClaw contains a symlink traversal vulnerability
Details
OpenClaw versions 2026.3.22 before 2026.4.5 contain a symlink traversal vulnerability in remote marketplace repository path handling that allows attackers to escape the expected repository root. Attackers can exploit this by providing crafted symlink paths to access files outside the intended repository directory.
Severity
6.5 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "openclaw"
},
"ranges": [
{
"events": [
{
"introduced": "2026.3.22"
},
{
"fixed": "2026.4.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-43570"
],
"database_specific": {
"cwe_ids": [
"CWE-61"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-08T20:04:46Z",
"nvd_published_at": "2026-05-05T12:16:20Z",
"severity": "MODERATE"
},
"details": "OpenClaw versions 2026.3.22 before 2026.4.5 contain a symlink traversal vulnerability in remote marketplace repository path handling that allows attackers to escape the expected repository root. Attackers can exploit this by providing crafted symlink paths to access files outside the intended repository directory.",
"id": "GHSA-35mw-5vvr-vrxc",
"modified": "2026-05-08T20:04:46Z",
"published": "2026-05-05T12:31:39Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-cr8r-7g2h-6wr6"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43570"
},
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/commit/94b0062e90467e1582b47cc971f308457c537f3a"
},
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/commit/b1dd3ded3589f6fa60ab85b3930a82d538edaeae"
},
{
"type": "PACKAGE",
"url": "https://github.com/openclaw/openclaw"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/openclaw-symlink-traversal-in-remote-marketplace-repository-path-handling"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OpenClaw contains a symlink traversal vulnerability"
}
GHSA-3FR6-6J6C-4MCX
Vulnerability from github – Published: 2026-04-01 15:31 – Updated: 2026-04-01 15:31
VLAI
Details
Dell AppSync, version(s) 4.6.0, contain(s) an UNIX Symbolic Link (Symlink) Following vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Information tampering.
Severity
7.3 (High)
{
"affected": [],
"aliases": [
"CVE-2026-22767"
],
"database_specific": {
"cwe_ids": [
"CWE-61"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-01T13:16:33Z",
"severity": "HIGH"
},
"details": "Dell AppSync, version(s) 4.6.0, contain(s) an UNIX Symbolic Link (Symlink) Following vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Information tampering.",
"id": "GHSA-3fr6-6j6c-4mcx",
"modified": "2026-04-01T15:31:15Z",
"published": "2026-04-01T15:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22767"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000446965/dsa-2026-163-security-update-for-dell-appsync-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Implementation
Symbolic link attacks often occur when a program creates a tmp directory that stores files/links. Access to the directory should be restricted to the program as to prevent attackers from manipulating the files.
Mitigation MIT-48.1
Architecture and Design
Strategy: Separation of Privilege
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.