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

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Summary

CVECVE-2026-28681
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-06 05:16:37 UTC
Updated2026-04-21 14:45:02 UTC
DescriptionInternet 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

Problem Types: CWE-601 | CWE-640 | CWE-601 CWE-601: URL Redirection to Untrusted Site ('Open Redirect') | CWE-640 CWE-640: Weak Password Recovery Mechanism for Forgotten Password

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Internet Routing Registry Daemon Project Internet Routing Registry Daemon All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Irrdnet Irrd affected >= 4.4.0, < 4.4.5 Not specified
CNA Irrdnet Irrd affected >= 4.5.0, < 4.5.1 Not specified

References

ReferenceSourceLinkTags
github.com/irrdnet/irrd/commit/8408e0f1b9f47eb2f2e712d6153e32194df05fbb [email protected] github.com Patch
irrd.readthedocs.io/en/stable/releases/4.4.5 [email protected] irrd.readthedocs.io Release Notes
github.com/irrdnet/irrd/commit/cf62df4a49d3891e80b2879d9b324d1af050000c [email protected] github.com Patch
irrd.readthedocs.io/en/stable/releases/4.5.1 [email protected] irrd.readthedocs.io Release Notes
github.com/irrdnet/irrd/security/advisories/GHSA-22m3-c7vp-49fj [email protected] github.com Mitigation, Vendor Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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