Open Redirect Affecting irrd package, versions [4.4.0,4.4.5)[4.5.0,4.5.1)
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-IRRD-15435626
- published6 Mar 2026
- disclosed6 Mar 2026
- creditRui Yang
Introduced: 6 Mar 2026
CVE-2026-28681 (opens in a new tab)How to fix?
Upgrade irrd to version 4.4.5, 4.5.1 or higher.
Overview
irrd is an Internet Routing Registry daemon (IRRd)
Affected versions of this package are vulnerable to Open Redirect via manipulation of the Host header during the password reset or account creation. An attacker can gain unauthorized access to user accounts by sending crafted email links that, when clicked, expose the password reset token to the attacker, enabling them to take over the account. This is only exploitable if the targeted user does not have two-factor authentication enabled.
Workaround
Configuring a reverse proxy (such as nginx) to reject requests where the Host header does not match the expected hostname is an effective workaround. Enabling two-factor authentication is strongly recommended for all users, as it prevents account takeover even if a password reset token is compromised.