Vulnerability · Published Nov 5, 2026 · Assigned by VulnCheck

CVE-2026-123196Authorizer before 2.4.2 Password Reset Poisoning via x-authorizer-url gRPC metadata

High 8.1

In plain English

A high-severity security flaw in authorizer from authorizerdev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.4%top 70.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
authorizerdev	authorizer	2.3.0-rc.3 – before 2.4.2

Weakness: CWE-640 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-m46m-j9p5-5j99) vendor-advisory
https://github.com/authorizerdev/authorizer/pull/814 issue-tracking, patch
https://github.com/authorizerdev/authorizer/commit/b5012cbcdc7c32dcb4bd43179a212055e7fcb863 patch
authorizer 2.4.2 Release Notes release-notes
https://github.com/authorizerdev/authorizer/blob/0bceb94f0ab726d9c396202f4d8fbedee1dc9cab/internal/grpcsrv/transport/grpc_metadata.go#L40 technical-description
https://github.com/authorizerdev/authorizer/blob/0bceb94f0ab726d9c396202f4d8fbedee1dc9cab/internal/gateway/mount.go#L244-L248 technical-description
VulnCheck Advisory: Authorizer before 2.4.2 Password Reset Poisoning via x-authorizer-url gRPC metadata third-party-advisory