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

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

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

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Weaknesses

CWE-22

Affected Products

palletsprojects

oss-project·US

werkzeugLibrary

OSS Libraries / pypi

pallets

oss-project·US

werkzeugLibrary

package-ecosystem

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Collection

Discovery

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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 →

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