Open Redirect Affecting python-pep517 package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.46% (40th percentile)

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  • Snyk IDSNYK-RHEL10-PYTHONPEP517-21737308
  • published27 Oct 2026
  • disclosed26 Oct 2026

Introduced: 26 Oct 2026

NewCVE-2026-116578  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 python-pep517.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-pep517 package and not the python-pep517 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Tornado is a Python web framework and asynchronous networking library. Prior to 6.6, tornado.web.RedirectHandler URL templates can place regex-capture substitutions where crafted request paths change the redirect scheme or network location. Affected placements include substitutions at the start of a path, directly after a fixed host, or at the beginning of the template, including protocol-relative, absolute, backslash, encoded, host-extension, and user-info variants interpreted by browsers as attacker-controlled destinations. Static templates and substitutions after a fixed host followed by a slash are not affected. An attacker can use the resulting open redirect on the application's domain for phishing. This issue is fixed in version 6.6.

CVSS Base Scores

version 3.1