Open Redirect
CVE-2026-28512
HIGH
GHSA-9h33-g3ww-mqff
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
4DescriptionGitHub Advisory
Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to before 2.4.0, a flaw in callback URL validation allowed crafted redirect_uri values containing URL userinfo (@) to bypass legitimate callback pattern checks. If an attacker can trick a user into opening a malicious authorization link, the authorization code may be redirected to an attacker-controlled host. This vulnerability is fixed in 2.4.0.
AnalysisAI
Pocket ID versions 2.0.0 through 2.3.x suffer from improper callback URL validation that allows attackers to bypass redirect URI restrictions using URL userinfo characters (@), enabling authorization code interception. An attacker can craft a malicious authorization link to redirect authentication codes to an attacker-controlled server if a user is tricked into clicking it. Public exploit code exists for this vulnerability, and no patch is currently available.
Technical ContextAI
This vulnerability (CWE-601: URL Redirection to Untrusted Site (Open Redirect)) affects Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to. Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to before 2.4.0, a flaw in callback URL validation allowed crafted redirect_uri values containing URL userinfo (@) to bypass legitimate callback pattern checks. If an attacker can trick a user into opening a malicious authorization link, the authorization code may be redirected to an attacker-controlled host. This vulnerability is fixed in 2.4.0.
RemediationAI
Fixed in version 2.4.0.. Restrict network access to the affected service where possible.
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Vendor StatusVendor
SUSE
Severity: HighShare
External POC / Exploit Code
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