Open Redirect Affecting webob package, versions [,1.8.10)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-WEBOB-17423184
- published23 Jun 2026
- disclosed22 Jun 2026
- creditCaleb Brown
Introduced: 22 Jun 2026
CVE-2026-44889 (opens in a new tab)How to fix?
Upgrade WebOb to version 1.8.10 or higher.
Overview
Affected versions of this package are vulnerable to Open Redirect in the normalization of the HTTP Location header during redirects. An attacker can redirect users to an arbitrary external site by supplying specially crafted input containing ASCII tab, carriage return, or newline characters, which are stripped before parsing and can cause the redirect target to be interpreted as a protocol-relative URL under attacker control.