CVE-2024-42353
webob: WebOb's location header normalization during redirect leads to open redirect
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 14, 2024
Updated · November 1, 2026
Description
A vulnerability was found in the WebOb package. WebOb normalizes the HTTP Location header using urlparse and urljoin. If the URL starts with //, urlparse treats the following part as the hostname, and replaces the original request's hostname. This issue, combined with user interaction, may become a vulnerability.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
If the Response class is used, any HTTP Location header (i.e. location) can be rewritten so that it always passes a full URI that includes the hostname to redirect the user to.
CVSS / CWE
CVSS 3.1 · 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-601 · URL Redirection to Untrusted Site