CVE-2026-123196
Authorizer before 2.4.2 Password Reset Poisoning via x-authorizer-url gRPC metadata
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
Authorizer before 2.4.2 contains a password reset poisoning vulnerability that allows unauthenticated attackers to control emailed link hosts by supplying x-authorizer-url gRPC metadata. Attackers can send this metadata to the gRPC port or a Grpc-Metadata-X-Authorizer-Url header through the REST gateway to capture reset or magic-link tokens and take over accounts.
| CWE | CWE-640 |
| Vendor | authorizerdev |
| Product | authorizer |
| Published | Nov 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
authorizerdev / authorizer
2.3.0-rc.3 < 2.4.2
References
github.com: https://github.com/authorizerdev/authorizer/security/advisories/GHSA-m46m-j9p5-5j99 github.com: https://github.com/authorizerdev/authorizer/pull/814 github.com: https://github.com/authorizerdev/authorizer/commit/b5012cbcdc7c32dcb4bd43179a212055e7fcb863 github.com: https://github.com/authorizerdev/authorizer/releases/tag/2.4.2 github.com: https://github.com/authorizerdev/authorizer/blob/0bceb94f0ab726d9c396202f4d8fbedee1dc9cab/internal/grpcsrv/transport/grpc_metadata.go#L40 github.com: https://github.com/authorizerdev/authorizer/blob/0bceb94f0ab726d9c396202f4d8fbedee1dc9cab/internal/gateway/mount.go#L244-L248 vulncheck.com: https://www.vulncheck.com/advisories/authorizer-before-2.4.2-password-reset-poisoning-via-x-authorizer-url-grpc-metadata
Credits
Theodoros Lampropoulos Lakhan Samani (lakhansamani)