CVE-2026-55671

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Source

https://cve.org/CVERecord?id=CVE-2026-55671

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55671.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-55671

Aliases

Published

2026-07-10T17:17:50.095Z

Modified

2026-07-16T03:30:58.773545174Z

Severity

2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Components

Details

ZITADEL is an open source identity management platform. From 4.0.0-rc.1 through 4.15.1, ZITADEL's HTTP notification channels, OIDC BackChannel Logout, and SAML metadata URL fetches do not consistently validate user-defined URLs against protected denylist handling, allowing server-side requests to loopback, internal IP, link-local, or redirected endpoints through DNS rebinding, redirects, or protocol downgrades. This issue is fixed in version 4.15.2.

Database specific

{
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55671.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/zitadel/zitadel

Affected ranges

Type

GIT

Repo

https://github.com/zitadel/zitadel

Events

Introduced

8f0b7ebf028187e84881694bb931cbe33604e308

Fixed

a1748b2f0326ddf7be0de44b4f980ae2c07c0151

Fixed

b6f78086913b8d916bce9ab2e049ab0d84f947fd

Fixed

c53d9774d4272d3cebeee4131012c20bd77b9dfb

Database specific

{
    "extracted_events": [
        {
            "introduced": "4.0.0-rc.1"
        },
        {
            "fixed": "4.15.1"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55671.json"