{"cve":"CVE-2024-49753","nvd":{"published":"2024-10-25T14:15:12.280","modified":"2026-06-17T08:00:23.030","status":"Analyzed","description":"Zitadel is open-source identity infrastructure software. Versions prior to 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 have a flaw in the URL validation mechanism of Zitadel actions allows bypassing restrictions intended to block requests to localhost (127.0.0.1). The isHostBlocked check, designed to prevent such requests, can be circumvented by creating a DNS record that resolves to 127.0.0.1. This enables actions to send requests to localhost despite the intended security measures. This vulnerability potentially allows unauthorized access to unsecured internal endpoints, which may contain sensitive information or functionalities. Versions 2.64.1, 2.63.6, 2.62.8, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 contain a patch. No known workarounds are available.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-20"],"references":["https://github.com/zitadel/zitadel/releases/tag/v2.58.7","https://github.com/zitadel/zitadel/releases/tag/v2.59.5","https://github.com/zitadel/zitadel/releases/tag/v2.60.4","https://github.com/zitadel/zitadel/releases/tag/v2.61.4","https://github.com/zitadel/zitadel/releases/tag/v2.62.8"],"products":["zitadel:zitadel"],"source":"nvd","synced_at":"2026-10-19T21:56:33.105311382+00:00"},"epss":{"cve":"CVE-2024-49753","score":0.00652,"percentile":0.51265,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6cf5-w9h3-4rqv","url":"https://osv.dev/vulnerability/GHSA-6cf5-w9h3-4rqv","summary":"Denied Host Validation Bypass in Zitadel Actions","modified":"2025-07-09T15:24:53Z","packages":[{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=2.64.0 <2.64.1"],"fixed":["2.64.1"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=2.63.0 <2.63.6"],"fixed":["2.63.6"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=2.62.0 <2.62.8"],"fixed":["2.62.8"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=2.61.0 <2.61.4"],"fixed":["2.61.4"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=2.60.0 <2.60.4"],"fixed":["2.60.4"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=2.59.0 <2.59.5"],"fixed":["2.59.5"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=1.80.1 <2.58.7"],"fixed":["2.58.7"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":["<0.0.0-20241022141644-79fb4cc1cc6e"],"fixed":["0.0.0-20241022141644-79fb4cc1cc6e"]},{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":[">=0.0.0 <1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e"],"fixed":["1.80.0-v2.20.0.20241022141644-79fb4cc1cc6e"]}]},{"id":"GO-2024-3216","url":"https://osv.dev/vulnerability/GO-2024-3216","summary":"Denied Host Validation Bypass in Zitadel Actions in github.com/zitadel/zitadel","modified":"2024-10-28T15:42:13.746470Z","packages":[{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":["all versions"],"fixed":[]}]}],"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."]}