CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
2269 vulnerabilities reference this CWE, most recent first.
GHSA-C2QP-V5VM-7VXF
Vulnerability from github – Published: 2026-08-10 18:32 – Updated: 2026-08-10 18:32tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::append_dir_all() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an untrusted directory, the function follows symlinks without verifying that resolved targets remain within the source root, causing out-of-bounds files to be included in the archive as regular files and disclosed to the attacker.
{
"affected": [],
"aliases": [
"CVE-2026-70622"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-10T18:18:50Z",
"severity": "HIGH"
},
"details": "tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::append_dir_all() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an untrusted directory, the function follows symlinks without verifying that resolved targets remain within the source root, causing out-of-bounds files to be included in the archive as regular files and disclosed to the attacker.",
"id": "GHSA-c2qp-v5vm-7vxf",
"modified": "2026-08-10T18:32:17Z",
"published": "2026-08-10T18:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70622"
},
{
"type": "WEB",
"url": "https://gist.github.com/thesmartshadow/e7dac0bb690ee17b9cc142154cb11726"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/tar-rs-symlink-escape-via-append-dir-all"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-C2WW-38J4-6R8M
Vulnerability from github – Published: 2022-05-14 02:21 – Updated: 2022-05-14 02:21Denial of service via crafting malicious link and sending it to a privileged user can cause Denial of Service in Kraftway 24F2XG Router firmware version 3.5.30.1118.
{
"affected": [],
"aliases": [
"CVE-2018-15351"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-17T14:29:00Z",
"severity": "HIGH"
},
"details": "Denial of service via crafting malicious link and sending it to a privileged user can cause Denial of Service in Kraftway 24F2XG Router firmware version 3.5.30.1118.",
"id": "GHSA-c2ww-38j4-6r8m",
"modified": "2022-05-14T02:21:29Z",
"published": "2022-05-14T02:21:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15351"
},
{
"type": "WEB",
"url": "https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/08/17/klcert-18-007-kraftway-24f2xg-router-denial-of-service"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C2XC-682Q-GHP8
Vulnerability from github – Published: 2024-05-22 21:30 – Updated: 2024-05-22 21:30Avira Prime Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avira Prime. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Avira Spotlight Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-21600.
{
"affected": [],
"aliases": [
"CVE-2023-51636"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-22T20:15:08Z",
"severity": "HIGH"
},
"details": "Avira Prime Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avira Prime. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the Avira Spotlight Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-21600.",
"id": "GHSA-c2xc-682q-ghp8",
"modified": "2024-05-22T21:30:35Z",
"published": "2024-05-22T21:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51636"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-469"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C366-5342-RPXC
Vulnerability from github – Published: 2026-04-30 12:33 – Updated: 2026-04-30 12:33In JetBrains IntelliJ IDEA before 2024.3.7.1,
2025.1.7.1,
2025.2.6.2,
2025.3.4.1,
2026.1.1 reading arbitrary local files was possible via built-in web server
{
"affected": [],
"aliases": [
"CVE-2026-41882"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-30T12:16:24Z",
"severity": "HIGH"
},
"details": "In JetBrains IntelliJ IDEA before 2024.3.7.1, \n2025.1.7.1,\n2025.2.6.2, \n2025.3.4.1, \n2026.1.1 reading arbitrary local files was possible via built-in web server",
"id": "GHSA-c366-5342-rpxc",
"modified": "2026-04-30T12:33:12Z",
"published": "2026-04-30T12:33:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41882"
},
{
"type": "WEB",
"url": "https://www.jetbrains.com/privacy-security/issues-fixed"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-C3C7-HP6G-R6V8
Vulnerability from github – Published: 2022-05-17 02:18 – Updated: 2022-05-17 02:18find_flags in Kitware GCC-XML (gccxml) 0.9.0 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/*.cxx temporary file.
{
"affected": [],
"aliases": [
"CVE-2008-4957"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-11-05T15:00:00Z",
"severity": "MODERATE"
},
"details": "find_flags in Kitware GCC-XML (gccxml) 0.9.0 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/*.cxx temporary file.",
"id": "GHSA-c3c7-hp6g-r6v8",
"modified": "2022-05-17T02:18:32Z",
"published": "2022-05-17T02:18:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-4957"
},
{
"type": "WEB",
"url": "https://bugs.gentoo.org/show_bug.cgi?id=235770"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/46408"
},
{
"type": "WEB",
"url": "http://bugs.debian.org/496391"
},
{
"type": "WEB",
"url": "http://dev.gentoo.org/~rbu/security/debiantemp/gccxml"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2008/10/30/2"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-C3FF-XFJV-HPQV
Vulnerability from github – Published: 2026-07-21 21:32 – Updated: 2026-07-23 15:30Data::RadixTree::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW.
The segment is created in radix.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing.
A "Shared" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open.
{
"affected": [],
"aliases": [
"CVE-2026-65063"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T20:17:05Z",
"severity": "LOW"
},
"details": "Data::RadixTree::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW.\n\nThe segment is created in radix.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing.\n\nA \"Shared\" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open.",
"id": "GHSA-c3ff-xfjv-hpqv",
"modified": "2026-07-23T15:30:36Z",
"published": "2026-07-21T21:32:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65063"
},
{
"type": "WEB",
"url": "https://metacpan.org/release/EGOR/Data-RadixTree-Shared-0.02/changes"
},
{
"type": "WEB",
"url": "https://metacpan.org/release/EGOR/Data-RadixTree-Shared-0.02/diff/EGOR/Data-RadixTree-Shared-0.01#radix.h"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-C3WC-3FRP-JHMQ
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.
{
"affected": [],
"aliases": [
"CVE-2026-49180"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T17:16:53Z",
"severity": "MODERATE"
},
"details": "Improper link resolution before file access (\u0027link following\u0027) in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.",
"id": "GHSA-c3wc-3frp-jhmq",
"modified": "2026-07-14T18:32:00Z",
"published": "2026-07-14T18:32:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49180"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49180"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-C3WQ-J5VH-68RC
Vulnerability from github – Published: 2026-06-19 17:45 – Updated: 2026-06-19 17:45Affected versions: v0.123.0 through v0.163.0. Earlier versions are not affected.
Fixed in: v0.163.1.
Severity: Medium. Requires the attacker to be able to place (or convince a site author to place) a symlink inside a mounted directory — for example, inside a locally-vendored theme under themes/. Themes mounted as Go modules from GitHub have symlinks stripped on download and are not affected. Multi-directory walks (e.g. content/asset walking) were not affected either; only direct lookups via resources.Get followed symlinks.
Description. Hugo's virtual filesystem is designed so that files under a mount cannot reach outside the mount tree. A regression introduced in v0.123.0 caused RootMappingFs.statRoot to call Stat (which follows symlinks) instead of Lstat, so a direct os.ReadFile "somefile" where somefile was a symlink pointing outside the mount would return the target's contents. This effectively let a symlink planted inside a theme or local mount read arbitrary files reachable to the user running hugo.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/gohugoio/hugo"
},
"ranges": [
{
"events": [
{
"introduced": "0.123.0"
},
{
"fixed": "0.163.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-19T17:45:38Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "**Affected versions:** v0.123.0 through v0.163.0. Earlier versions are not affected.\n**Fixed in:** v0.163.1.\n**Severity:** Medium. Requires the attacker to be able to place (or convince a site author to place) a symlink inside a mounted directory \u2014 for example, inside a locally-vendored theme under `themes/`. Themes mounted as Go modules from GitHub have symlinks stripped on download and are not affected. Multi-directory walks (e.g. content/asset walking) were not affected either; only direct lookups via `resources.Get` followed symlinks.\n\n**Description.** Hugo\u0027s virtual filesystem is designed so that files under a mount cannot reach outside the mount tree. A regression introduced in v0.123.0 caused `RootMappingFs.statRoot` to call `Stat` (which follows symlinks) instead of `Lstat`, so a direct `os.ReadFile \"somefile\"` where `somefile` was a symlink pointing outside the mount would return the target\u0027s contents. This effectively let a symlink planted inside a theme or local mount read arbitrary files reachable to the user running `hugo`.",
"id": "GHSA-c3wq-j5vh-68rc",
"modified": "2026-06-19T17:45:38Z",
"published": "2026-06-19T17:45:38Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gohugoio/hugo/security/advisories/GHSA-c3wq-j5vh-68rc"
},
{
"type": "PACKAGE",
"url": "https://github.com/gohugoio/hugo"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Hugo: Symlink confinement bypass in os.ReadFile"
}
GHSA-C3WR-WRC5-MQG4
Vulnerability from github – Published: 2022-05-17 02:18 – Updated: 2022-05-17 02:18scilab-bin 4.1.2 allows local users to overwrite arbitrary files via a symlink attack on (a) /tmp/SciLink#####1, (b) /tmp/SciLink#####2, (c) /tmp/SciLink#####3, (d) /tmp/.#####, (e) /tmp/.#####.res, (f) /tmp/.#####.err, and (g) /tmp/.#####.diff temporary files, related to the (1) scilink, (2) scidoc, and (3) scidem scripts.
{
"affected": [],
"aliases": [
"CVE-2008-4983"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-11-06T15:55:00Z",
"severity": "MODERATE"
},
"details": "scilab-bin 4.1.2 allows local users to overwrite arbitrary files via a symlink attack on (a) /tmp/SciLink#####1, (b) /tmp/SciLink#####2, (c) /tmp/SciLink#####3, (d) /tmp/*.#####, (e) /tmp/*.#####.res, (f) /tmp/*.#####.err, and (g) /tmp/*.#####.diff temporary files, related to the (1) scilink, (2) scidoc, and (3) scidem scripts.",
"id": "GHSA-c3wr-wrc5-mqg4",
"modified": "2022-05-17T02:18:27Z",
"published": "2022-05-17T02:18:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-4983"
},
{
"type": "WEB",
"url": "https://bugs.gentoo.org/show_bug.cgi?id=235770"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/44883"
},
{
"type": "WEB",
"url": "http://bugs.debian.org/496414"
},
{
"type": "WEB",
"url": "http://dev.gentoo.org/~rbu/security/debiantemp/scilab-bin"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/33630"
},
{
"type": "WEB",
"url": "http://security.gentoo.org/glsa/glsa-200901-14.xml"
},
{
"type": "WEB",
"url": "http://uvw.ru/report.lenny.txt"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2008/10/30/2"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/30968"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-C48C-24J9-J745
Vulnerability from github – Published: 2024-02-29 21:30 – Updated: 2024-02-29 21:30Improper Link Resolution Before File Access ('Link Following') vulnerability in HYPR Workforce Access on MacOS allows File Manipulation.This issue affects Workforce Access: before 8.7.1.
{
"affected": [],
"aliases": [
"CVE-2024-0068"
],
"database_specific": {
"cwe_ids": [
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-29T20:15:41Z",
"severity": "MODERATE"
},
"details": "Improper Link Resolution Before File Access (\u0027Link Following\u0027) vulnerability in HYPR Workforce Access on MacOS allows File Manipulation.This issue affects Workforce Access: before 8.7.1.\n\n",
"id": "GHSA-c48c-24j9-j745",
"modified": "2024-02-29T21:30:51Z",
"published": "2024-02-29T21:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0068"
},
{
"type": "WEB",
"url": "https://www.hypr.com/trust-center/security-advisories"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:L",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-48.1
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-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.