Open Redirect Affecting python-webob package, versions <1:1.8.6-3-e1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.53% (42nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-PYTHONWEBOB-17966306
  • published14 Jul 2026
  • disclosed14 Aug 2024

Introduced: 14 Aug 2024

CVE-2024-42353  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade Echo:latest python-webob to version 1:1.8.6-3-e1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-webob package and not the python-webob package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. urlparse however treats a // at the start of a string as a URI without a scheme, and then treats the next part as the hostname. urljoin will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.

CVSS Base Scores

version 3.1