Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CWE-22 (对路径名的限制不恰当(路径遍历)) — Vulnerability Class 5197

5197 vulnerabilities classified as CWE-22 (对路径名的限制不恰当(路径遍历)). AI Chinese analysis included.

CWE-22 represents a critical input validation weakness where software fails to properly sanitize external input before constructing file paths. Attackers typically exploit this vulnerability by injecting directory traversal sequences, such as “../”, into user-supplied parameters. These malicious inputs allow the application to resolve file references outside the intended restricted directory, potentially granting unauthorized access to sensitive system files, configuration data, or source code. To mitigate this risk, developers must implement rigorous input validation techniques, ensuring that all path components are strictly checked against allowed characters and structures. Additionally, employing canonicalization to resolve symbolic links and relative paths before validation, combined with strict chroot jails or sandboxing, effectively confines file operations to designated directories, thereby neutralizing the potential for path traversal attacks and preserving system integrity.

MITRE CWE Description
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Many file operations are intended to take place within a restricted directory. By using special elements such as ".." and "/" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the "../" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as "/usr/local/bin" to access unexpected files. This is referred to as absolute path traversal.
Common Consequences (4)
Integrity, Confidentiality, Availability Execute Unauthorized Code or Commands
The attacker may be able to create or overwrite critical files that are used to execute code, such as programs or libraries.
Integrity Modify Files or Directories
The attacker may be able to overwrite or create critical files, such as programs, libraries, or important data. If the targeted file is used for a security mechanism, then the attacker may be able to bypass that mechanism. For example, appending a new account at the end of a password file may allow …
Confidentiality Read Files or Directories
The attacker may be able read the contents of unexpected files and expose sensitive data. If the targeted file is used for a security mechanism, then the attacker may be able to bypass that mechanism. For example, by reading a password file, the attacker could conduct brute force password guessing a…
Availability DoS: Crash, Exit, or Restart
The attacker may be able to overwrite, delete, or corrupt unexpected critical files such as programs, libraries, or important data. This may prevent the product from working at all and in the case of protection mechanisms such as authentication, it has the potential to lock out product users.
Mitigations (5)
Implementation Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does. When performing input validation, consider all potentially relevant properties, including length, type of input, the full range…
Architecture and Design For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Implementation Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked. Use a built-in path canonicalization function (such as realpath(…
Architecture and Design Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Operation Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
Effectiveness: Moderate
Examples (2)
The following code could be for a social networking application in which each user's profile information is stored in a separate file. All files are stored in a single directory.
my $dataPath = "/users/cwe/profiles"; my $username = param("user"); my $profilePath = $dataPath . "/" . $username; open(my $fh, "<", $profilePath) || ExitError("profile read error: $profilePath"); print "<ul>\n"; while (<$fh>) { print "<li>$_</li>\n"; } print "</ul>\n";
Bad · Perl
../../../etc/passwd
Attack
In the example below, the path to a dictionary file is read from a system property and used to initialize a File object.
String filename = System.getProperty("com.domain.application.dictionaryFile"); File dictionaryFile = new File(filename);
Bad · Java
CVE ID Title CVSS Severity Published
CVE-2026-28189 WordPress Participants Database plugin <= 2.7.8.4 - Arbitrary File Deletion vulnerability — Participants Database 7.4 High 2026-08-13
CVE-2026-73620 GitPython before 3.1.57 Arbitrary File Overwrite and Read — GitPython 8.1 High 2026-08-13
CVE-2026-73498 MCP Atlassian is a Model Context Protocol (MCP): Arbitrary file read via missing path validation in confluence_upload_attachment — mcp-atlassian 7.7 High 2026-08-12
CVE-2026-13622 Kubevirt: virt-handler-rhel9: kubevirt: virt-handler migration proxy follows symlinks allowing container escape to host — Red Hat Container Native Virtualization 4.12 8.8 High 2026-08-12
CVE-2026-64826 rConfig < 8.2.13 Path Traversal File Read via FileDownloadController — rConfig 6.5 Medium 2026-08-12
CVE-2026-13105 IBM i Access Client Solutions (ACS) is Affected By Multiple Vulnerabilities — i Access Client Solutions 8.8 High 2026-08-12
CVE-2026-16033 Arbitrary file read+write on host via templates/ symlink in malicious image — LXD 8.5 High 2026-08-12
CVE-2026-66898 Path traversal via unvalidated instance name in backup tarball restore enables root file write / RCE — LXD 9.9 Critical 2026-08-12
CVE-2026-73407 Budibase: Unauthenticated REST Datasource Credential Theft via Cross-Origin Auth Leak (bypass of CVE-2026-48152)) — budibase 9.0 Critical 2026-08-12
CVE-2026-17266 IBM i is Affected By Multiple Vulnerabilities in Navigator for i — i 6.5 Medium 2026-08-12
CVE-2026-17094 IBM i is Affected By Path Traversal Vulnerability in Navigator for i — i 4.3 Medium 2026-08-12
CVE-2026-18106 IBM i is Affected By Multiple Vulnerabilities in Navigator for i — i 4.3 Medium 2026-08-12
CVE-2026-66384 Authenticated users may write data outside the intended Docker cache path — artifactory 5.3 Medium 2026-08-12
CVE-2026-66382 Authenticated users may write files outside the intended Artifactory work directory — artifactory 4.3 Medium 2026-08-12
CVE-2026-66381 Repository readers may access content outside configured upstream paths — artifactory 5.3 Medium 2026-08-12
CVE-2026-73291 Seerr: Path traversal to RCE via /avatarproxy image cache filename from upstream ETag — seerr 7.1 High 2026-08-12
CVE-2026-67286 Joomla Extension - joomshaper.com - Unauthenticated arbitrary directory creation and file write in SP Page Builder < 6.8.0 — SP Page Builder extension for Joomla 6.3 Medium 2026-08-12
CVE-2026-67285 Joomla Extension - joomshaper.com - Unauthenticated arbitrary local PHP file inclusion in SP Page Builder < 6.8.0 — SP Page Builder extension for Joomla 9.2 Critical 2026-08-12
CVE-2026-19594 Path Traversal and HTTP Parameter Pollution in Snowflake Python API (snowflake.core) Allow Confused-Deputy Privilege Escalation — Snowflake Python APIs 8.1 High 2026-08-12
CVE-2026-63134 Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation — Malcolm 5.4 Medium 2026-08-11
CVE-2026-73244 kkFileView: Unauthenticated path traversal in POST /listFiles allows arbitrary directory listing — kkFileView 5.3 Medium 2026-08-11
CVE-2026-73234 FreeCAD: FCStd path traversal allows arbitrary file write via unsanitized file attribute in PropertyFileIncluded::Restore() — FreeCAD 7.8 High 2026-08-11
CVE-2026-19091 GeoDirectory <= 2.8.169 - Authenticated (Subscriber+) Arbitrary File Deletion via 'post_type' Parameter via Query-String Bypass in geodir_save_post + geodir_delete_revision — GeoDirectory – WP Business Directory Plugin and Classified Listings Directory 8.1 High 2026-08-11
CVE-2026-73034 DB-GPT v0.8.1 Path Traversal Arbitrary File Write via user_id Header — DB-GPT 9.8 Critical 2026-08-11
CVE-2026-71475 Insights-client-rhel9: insights-client: spoke-controlled clusterid injected unencoded into insights api url path — Red Hat Advanced Cluster Management for Kubernetes 2.13 6.8 Medium 2026-08-11
CVE-2026-73227 electerm's RDP clipboard file download may parse unsafe file name — electerm 8.1 High 2026-08-11
CVE-2026-73225 electerm: Path traversal in FTP/SFTP recursive folder download via unsanitized server filename — electerm 8.1 High 2026-08-11
CVE-2026-73223 electerm: Path traversal in editWithSystemEditor temp file path via unsanitized SFTP filename — electerm 8.1 High 2026-08-11
CVE-2026-72713 XAgent Path Traversal Arbitrary File Read via /workspace/file — XAgent 7.5 High 2026-08-11
CVE-2026-48441 Lightroom Classic | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) — Lightroom Classic 8.6 High 2026-08-11

Vulnerabilities classified as CWE-22 (对路径名的限制不恰当(路径遍历)) represent 5197 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.