{"cve":"CVE-2026-28681","nvd":{"published":"2026-03-06T05:16:37.710","modified":"2026-06-17T10:28:53.900","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-601","CWE-640"],"references":["https://github.com/irrdnet/irrd/commit/8408e0f1b9f47eb2f2e712d6153e32194df05fbb","https://github.com/irrdnet/irrd/commit/cf62df4a49d3891e80b2879d9b324d1af050000c","https://github.com/irrdnet/irrd/security/advisories/GHSA-22m3-c7vp-49fj","https://irrd.readthedocs.io/en/stable/releases/4.4.5","https://irrd.readthedocs.io/en/stable/releases/4.5.1"],"products":["internet_routing_registry_daemon_project:internet_routing_registry_daemon"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-28681","score":0.00444,"percentile":0.3865,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-22m3-c7vp-49fj","url":"https://osv.dev/vulnerability/GHSA-22m3-c7vp-49fj","summary":"IRRd: web UI host header injection allows password reset poisoning via attacker-controlled email links","modified":"2026-07-13T07:26:40.433375903Z","packages":[{"ecosystem":"PyPI","name":"irrd","purl":"pkg:pypi/irrd","ranges":[">=4.4.0 <4.4.5"],"fixed":["4.4.5"]},{"ecosystem":"PyPI","name":"irrd","purl":"pkg:pypi/irrd","ranges":[">=4.5.0 <4.5.1"],"fixed":["4.5.1"]}]},{"id":"PYSEC-2026-2186","url":"https://osv.dev/vulnerability/PYSEC-2026-2186","summary":"","modified":"2026-07-13T07:15:34.111673335Z","packages":[{"ecosystem":"PyPI","name":"irrd","purl":"pkg:pypi/irrd","ranges":[">=4.4.0 <4.4.5",">=4.5.0 <4.5.1"],"fixed":["4.4.5","4.5.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}