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CVE-2026-28681

CVE-2026-28681 · IRRd: web UI host header injection allows password reset poisoning via attacker-controlled email links

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Internet Routing Registry daemon version 4 is an IRR database server, processing IRR objects in the RPSL format. From version 4.4.0 to before version 4.4.5 and from version 4.5.0 to before version 4.5.1, an attacker can manipulate the HTTP Host header on a password reset or account creation request. The confirmation link in the resulting email can then point to an attacker-controlled domain. Opening the link in the email is sufficient to pass the token to the attacker, who can then use it on the real IRRD instance to take over the account. A compromised account can then be used to modify RPSL objects maintained by the account's mntners and perform other account actions. If the user had two-factor authentication configured, which is required for users with override access, an attacker is not able to log in, even after successfully resetting the password. This issue has been patched in versions 4.4.5 and 4.5.1.

CVSS 8.1 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • irrd

    Versions
    • >= 4.4.0, < 4.4.5: Affected
    • >= 4.5.0, < 4.5.1: Affected

    No fix published

  • irrd PyPI

    Versions
    • 4.4.0
    • 4.4.1
    • 4.4.2
    • 4.4.3
    • 4.4.4
    Affected ranges
    • ECOSYSTEM: ≥ 4.4.0, < 4.4.5

    Update to 4.4.5

  • irrd PyPI

    Versions
    • 4.5.0
    Affected ranges
    • ECOSYSTEM: ≥ 4.5.0, < 4.5.1

    Update to 4.5.1

  • irrd PyPI

    Versions
    • 4.4.0
    • 4.4.1
    • 4.4.2
    • 4.4.3
    • 4.4.4
    • 4.5.0
    Affected ranges
    • ECOSYSTEM: ≥ 4.4.0, < 4.4.5 ∪ ≥ 4.5.0, < 4.5.1

    Update to 4.4.5; Update to 4.5.1

Original sources

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