CVE Tools
Sign in

CVE-2024-49766

Werkzeug safe_join not safe on Windows

Published: Oct 25, 2024Updated: Dec 3, 2025 Sources: CVE List NVD GHSACWE-22
5.3MEDIUM
NVD MITRE
EPSS Score
0.8%
Top 47.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Werkzeug is a Web Server Gateway Interface web application library. On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable. Werkzeug version 3.0.6 contains a patch.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-22

Affected Products

palletsprojects
oss-project·US
werkzeugLibrary
OSS Libraries / pypi
pallets
oss-project·US
werkzeugLibrary
OSS Libraries / pypi
PyPI
package-ecosystem
Werkzeug
OSS Libraries

Exploitability

Official Patch Available
Is your org exposed to CVE-2024-49766?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092
github.com
https://github.com/pallets/werkzeug/releases/tag/3.0.6
github.com
https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j
github.com
and 4 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2024-49766 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows