Detections
Analytics
SCA: security update for werkzeug (GHSA-29vq-49wr-vm6x)
medium Tenable Cloud Security Plugin ID 437878
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safe_join 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 safe_join accepts
paths with multiple segments, such as example/NUL. The function send_from_directory uses safe_join to
safely serve files at user-specified paths under a directory. If the application is running on Windows,
and the requested path ends with a special device name, the file will be opened successfully, but reading
will hang indefinitely. This issue has been fixed in version 3.1.6. (CVE-2026-27199)
See Also
Plugin Details
Severity: Medium
ID: 437878
Version: Revision 1.8
Type: Local
Family: SCA Checks
Published: 2/20/2026
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3.9
Percentile: 52.77
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2026-27199
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 6.3
Threat Score: 2.9
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 2/19/2026
Vulnerability Publication Date: 2/19/2026
Reference Information
CVE: CVE-2026-27199
cwe: CWE-67