CVE-2026-102598 Werkzeug safe_join() allows Windows special device names

Werkzeug is a comprehensive WSGI web application library. Prior to 3.1.9, the safejoin function used by sendfromdirectory can allow a NUL: special-device path because safejoin checks the Windows device name without first removing an empty NTFS ADS marker. The trigger is that an application runs o...

CVE-2026-102598: Improper Handling of Windows Device Names

Werkzeug is a comprehensive WSGI web application library. Prior to 3.1.9, the safejoin function used by sendfromdirectory can allow a NUL: special-device path because safejoin checks the Windows device name without first removing an empty NTFS ADS marker. The trigger is that an application runs o...

CVE-2026-61800

Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. In versions 4.4.0 through 4.14.6, a party holding the cluster key can write, overwrite, or delete arbitrary files under /var/ossec on worker nodes, leading to remote code executi...

Security Bulletin: IBM Cloud Pak for Data System (CPDS 1.0) is affected by improper handling of Windows device names due to Werkzeug

Summary Werkzeug is used by IBM Cloud Pak for Data System 1.0 as a WSGI web application library. CVE-2026-27199 affects Werkzeug's safejoin function, which fails to properly filter Windows device names when preceded by other path segments in multi-segment paths. This allows the sendfromdirectory...

Security Bulletin:Werkzeug safe_join function allows path segments with Windows device names containing file extensions or trailing spaces

Summary Werkzeug is a comprehensive WSGI web application library. Prior to version 3.1.5, Werkzeug's safejoin function allows path segments with Windows device names that have file extensions or trailing spaces. On Windows, there are special device names such as CON, AUX, etc that are implicitly...

CVE-2026-39981

AGiXT is a dynamic AI Agent Automation Platform. Prior to 1.9.2, the safejoin function in the essentialabilities extension fails to validate that resolved file paths remain within the designated agent workspace. An authenticated attacker can use directory traversal sequences to read, write, or...

CVE-2026-39981 AGiXT has a Path Traversal in safe_join()

AGiXT is a dynamic AI Agent Automation Platform. Prior to 1.9.2, the safejoin function in the essentialabilities extension fails to validate that resolved file paths remain within the designated agent workspace. An authenticated attacker can use directory traversal sequences to read, write, or...

CVE-2026-39981

AGiXT is a dynamic AI Agent Automation Platform. Prior to 1.9.2, the safejoin function in the essentialabilities extension fails to validate that resolved file paths remain within the designated agent workspace. An authenticated attacker can use directory traversal sequences to read, write, or...

GHSA-5GFJ-64GH-MGMW AGiXT Vulnerable to Path Traversal in safe_join()

Summary The safejoin function in the essentialabilities extension fails to validate that resolved file paths remain within the designated agent workspace. An authenticated attacker can use directory traversal sequences to read, write, or delete arbitrary files on the server hosting the AGiXT...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to improper name handling in Werkzeug [ CVE-2025-66221]

Summary IBM Watson Speech Services Cartridge is vulnerable to improper name handling in Werkzeug, caused by a reading issue with Werkzeug's safejoin function that allows path segments with special device names to hang indefinately CVE-2025-66221. Werkzeug is used in our service runtimes. This...

CVE-2026-27199

Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safejoin function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that...

PYSEC-2026-2320

Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safejoin function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that...

PYSEC-2026-2320

Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safejoin function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that...

CVE-2026-27199

Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safejoin function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that...

CVE-2026-27199 Werkzeug safe_join() allows Windows special device names

Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safejoin function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that...

CVE-2026-27199

CVE-2026-27199 affects Werkzeug. Versions 3.1.5 and earlier allow Windows device names as filenames when the path includes multiple segments, due to incomplete filtering in the safe_join function used by send_from_directory. When running on Windows, a request ending with a device name can open th...

CVE-2026-27199: Improper Handling of Windows Device Names

Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safejoin function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that...

Werkzeug 安全漏洞

Werkzeug is a comprehensive WSGI web application library developed by Pallets. Versions of Werkzeug 3.1.5 and earlier contained security vulnerabilities; these vulnerabilities stemmed from the safejoin function, which allowed Windows device names to be used as file names, potentially leading to...

Exploit for CVE-2026-27199

CVE-2026-27199 PoC: Werkzeug safejoin Windows Device-Name...

Improper Handling of Windows Device Names

Overview Affected versions of this package are vulnerable to Improper Handling of Windows Device Names via the safejoin function. An attacker can cause the application to hang indefinitely by requesting a path ending with a Windows special device name. Notes: 1 This is only vulnerable on Windows,...