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Description

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.

PUBLISHED Reserved 2026-03-02 | Published 2026-03-06 | Updated 2026-03-06 | Assigner GitHub_M




HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Problem types

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

CWE-640: Weak Password Recovery Mechanism for Forgotten Password

Product status

>= 4.4.0, < 4.4.5
affected

>= 4.5.0, < 4.5.1
affected

References

github.com/...t/irrd/security/advisories/GHSA-22m3-c7vp-49fj

github.com/...ommit/8408e0f1b9f47eb2f2e712d6153e32194df05fbb

github.com/...ommit/cf62df4a49d3891e80b2879d9b324d1af050000c

irrd.readthedocs.io/en/stable/releases/4.4.5

irrd.readthedocs.io/en/stable/releases/4.5.1

cve.org (CVE-2026-28681)

nvd.nist.gov (CVE-2026-28681)

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