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CVE-2026-12985 Critical · 9.3 CWE-601 Sep 14, 2026
Mattermost DCR redirect URI allowlist bypass via improper URL component validation
Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7 Mattermost failed to validate Dynamic Client Registration redirect URIs by URL component (matching glob patterns against the raw URI string instead) which allows a remote unauthenticated attacker to register an OAuth client with an attacker-controlled callback host that bypasses the configured redirect URI allowlist via a crafted redirect URI that places an allowlisted host/path suffix inside the query string.. Mattermost Advisory ID: MMSA-2026-00700
CVE-2026-73191 Medium · 6.1 CWE-601 Sep 14, 2026
Apache Syncope: CAS service URL injection via Forwarded HTTP headers
URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Apache Syncope. When the Syncope SRA is configured for CAS authentication, the target Apereo CAS instance's URL is calculated by unconditionally looking at client-supplied forwarded HTTP headers. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
CVE-2023-24034 Low · 3.1 CWE-601 Sep 14, 2026
Open Redirect in Nagios Nagios Xi
An issue was discovered in twilio_ajax_handler.php in Nagios XI before 5.9.3. An attacker can force a user to visit a malicious site by using a open redirect vulnerability.
CVE-2026-80072 Medium · 4.7 CWE-601 Sep 13, 2026
User Registration & Membership < 5.2.8 - Unauthenticated Open Redirect via Login Redirect Parameters
The User Registration & Membership WordPress plugin before 5.2.8 does not validate the destination of a post-login redirect before redirecting, allowing unauthenticated attackers to redirect visitors to an arbitrary external URL, which can be abused for phishing.
CVE-2026-90453 Low · 3.5 CWE-601 Sep 11, 2026
Open Redirect in Malcolm
A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be redirected to an arbitrary external destination after completing an upload.
CVE-2026-81913 Medium · 6.1 CWE-601 Sep 11, 2026
Concrete CMS versions 9.5.0 through 9.5.2 are vulnerable to Open Redirect via the rcURL parameter.
Concrete CMS versions 9.5.0 through 9.5.2 are vulnerable to Open Redirect via the rcURL parameter. An attacker can craft a single link on the site's own domain that sends a user to an arbitrary external site immediately after authentication, facilitating phishing and credential theft. The same handling is present in the registration flow, giving a second entry point on sites with registration enabled. Concrete CMS versions prior to 9.5.0 do not include the rcURL parameter or this allowlist and are not affected. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 5.3 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Michal M. for reporting.
CVE-2026-54072 Critical · 9.3 CWE-601 Sep 11, 2026
Authorizer: Unvalidated redirect_uri in /authorize leaks OAuth2 tokens to attacker-controlled URL
Authorizer is an open-source, self-hostable authentication and authorization server. Prior to version 2.2.1, the `/authorize` endpoint accepts any `redirect_uri` without validating it against `AllowedOrigins`. When `response_type=token` or `response_type=id_token`, the server appends `access_token`, `id_token`, and `refresh_token` as query parameters and issues a 302 redirect to the attacker-supplied URL. An unauthenticated attacker can obtain the required `client_id` from the public `/graphql?query={meta{client_id}}` endpoint. A partial fix was applied in v2.0.1 to other handlers (`oauth_login`, `verify_email`, `magic_link_login`, `forgot_password`, `invite_members`, `oauth_callback`) but `/authorize` was not included. Version 2.2.1 contains a more complete fix.
CVE-2026-88887 High · 8.6 CWE-601 Sep 10, 2026
Renovate before 44.11.2 Credential Exfiltration via Link Header
Renovate is a dependency update automation tool. When listing tags/digests for a container image, Renovate follows pagination links supplied by the remote registry in the HTTP Link header and attaches the registry credentials to the follow-up request without verifying that the pagination URL has the same origin as the original registry. A malicious or compromised container registry can therefore specify a Link header pointing to an attacker-controlled host and receive the credentials Renovate uses for that registry. Exploitation requires that the target has container (Docker) dependencies and is already interacting with the malicious or compromised registry. This is fixed in Renovate 44.11.2 (npm and renovate/renovate images), Mend Renovate CE/EE 15.4.0 and the mend-renovate-enterprise-edition Helm chart 10.4.0; the same-origin check can be disabled with RENOVATE_X_DOCKER_PAGINATION_ALLOW_CROSS_ORIGIN.
CVE-2026-88882 High · 8.6 CWE-601 Sep 10, 2026
Renovate before 44.11.2 Credential Exfiltration via Link Header
Renovate is a dependency update automation tool. In versions before 44.11.2 (and Mend Renovate CE/EE images and charts before 15.4.0, and mend-renovate-enterprise-edition helm chart before 10.4.0), when listing new package versions from a NuGet registry Renovate follows pagination URLs supplied by the registry in the HTTP `Link` header without verifying that the target has the same origin as the configured registry. Registry credentials are attached to the request for the 'next' page, so a malicious or compromised NuGet registry can return a `Link` header pointing at an attacker-controlled server and cause Renovate to send the registry credentials to that server. Exploitation requires the remote registry to be malicious or compromised; such a registry would normally already have received the credentials on the initial request, so the issue primarily allows the credentials to be delivered to an additional, attacker-chosen host. The fix restricts pagination to the same origin; the previous behaviour can be re-enabled with the RENOVATE_X_NUGET_PAGINATION_ALLOW_CROSS_ORIGIN option.
CVE-2026-88881 High · 8.6 CWE-601 Sep 10, 2026
Renovate before 44.11.3 Credential Exfiltration via Link Header
Renovate, a dependency update tool, follows pagination links supplied by the GitHub server in the HTTP `Link` header when interacting with GitHub.com, GitHub Enterprise Cloud, or GitHub Enterprise Server, and sends the credentials configured for that host to the URL given as the 'next' page. Because the pagination URL is not validated against the host originally contacted, a malicious or compromised GitHub server can return a `Link` header pointing to an attacker-controlled host and cause Renovate to disclose those credentials to it. Exploitation requires that the GitHub server Renovate talks to (as the repository host or as a datasource such as github-releases, github-tags, or git-refs) is already malicious or compromised. The issue is fixed in renovate 44.11.3 (npm and renovate/renovate container images), Mend Renovate CE/EE images and the mend-renovate-ce helm chart 15.4.0, and the mend-renovate-enterprise-edition helm chart 10.4.0. There is no workaround; the pre-existing RENOVATE_X_REBASE_PAGINATION_LINKS option disables the new host check and should only be used with servers that intentionally use different pagination hosts.
CVE-2026-88880 High · 8.6 CWE-601 Sep 10, 2026
Renovate before 44.11.3 Credential Exfiltration via Link Header
Renovate before 44.11.3 fails to validate Link header destinations when following GitLab server pagination, allowing malicious servers to redirect credential-bearing requests. Attackers controlling a compromised GitLab server can specify a Link header pointing to attacker-controlled infrastructure to exfiltrate authentication credentials.
CVE-2026-8323 Critical · 9.3 CWE-601 Sep 10, 2026
Open Redirect in Armiya Information Technologies' Access Control System
URL redirection to untrusted site ('open redirect') vulnerability in Armiya Information Technologies Ltd. Co. Access Control System allows Fake the Source of Data. This issue affects Access Control System: before Versiyon 2.
CVE-2026-86756 Medium · 6.1 CWE-601 Sep 9, 2026
Snipe-IT 8.5.0 through 8.6.3 Open Redirect via SAML RelayState
Snipe-IT 8.5.0 through 8.6.3 contains an open redirect vulnerability in its SAML assertion-consumer endpoint (SamlController::acs, POST /saml/acs). The endpoint wrote the RelayState POST parameter directly into Laravel's url.intended session key with only CR/LF characters stripped, and LoginController later issued redirect()->intended(), which passes an absolute URL through to the Location header unchanged. An unauthenticated attacker who induces a user of a SAML-SSO-enabled instance to visit a crafted IdP-initiated SSO link can therefore cause the victim's browser to be redirected to an arbitrary absolute external URL immediately after a successful authentication, which the advisory notes facilitates credential-harvesting phishing. No account on the target instance and no compromise of the identity provider are required. Only deployments with SAML SSO enabled are affected. Fixed in 8.7.0 (commit d30b73d, PR #19386), which validates RelayState via a new Helper::sameOriginUrl check before storing it.
CVE-2026-78377 Medium · 6.1 CWE-601 Sep 9, 2026
Open Redirect in Yordam Informatics's Library Automation System
URL redirection to untrusted site ('open redirect') vulnerability in Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc. Library Information and Document Automation Program allows Phishing. This issue affects Library Information and Document Automation Program: from v22.1 before v22.2.
CVE-2026-81741 Medium · 4.7 CWE-601 Sep 9, 2026
Groundhogg < 4.7.2 - Open Redirect via 'redirect_to' Parameter
The Groundhogg — CRM, Newsletters, and Marketing Automation WordPress plugin before 4.7.2 does not restrict the redirect target of its email preference confirmation flow to the site's own host, allowing unauthenticated attackers to redirect visitors to an arbitrary external URL by way of a crafted link.
CVE-2026-28631 High · 7.8 CWE-601 Sep 8, 2026
Open Redirect in Google Android
In buildMiniResolver of IntentForwarderActivity.java, there is a possible consent bypass due to a tapjacking/overlay attack. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
CVE-2026-28630 Low · 3.3 CWE-601 Sep 8, 2026
Open Redirect in Google Android
In onCreate of ContactsPickerActivity.kt, there is a possible misleading UI due to a tapjacking/overlay attack. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
CVE-2026-28626 High · 7.3 CWE-601 Sep 8, 2026
Open Redirect in Google Android
In onCreate of SetupPassthroughActivity.java, there is a possible way to launch arbitrary activity due to Intent redirection . This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.
CVE-2026-28572 High · 7.8 CWE-601 Sep 8, 2026
Open Redirect in Google Android
In onCreate of InstallLaunch.kt, there is a possible misleading UI due to a tapjacking/overlay attack. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
CVE-2026-84389 Low · 3.1 CWE-601 Sep 8, 2026
Open Redirect in Fortinet Fortisiem
A url redirection to untrusted site ('open redirect') vulnerability in Fortinet FortiSIEM 7.5.0 through 7.5.1, FortiSIEM 7.4.1 through 7.4.2 may allow attacker to execute unauthorized code or commands via <insert attack vector here>
CVE-2026-86256 Medium · 5.4 CWE-601 Sep 6, 2026
wger before 2.6 Open Redirect via trainer-login next parameter
wger before 2.6 (affected versions <= 2.5.0) contains an open redirect vulnerability in the trainer_login view (wger/core/views/user.py). After a trainer enters impersonation mode, the view redirects to the user-supplied 'next' GET parameter via HttpResponseRedirect() without validating it with url_has_allowed_host_and_scheme(). An attacker who delivers a crafted link to an authenticated trainer can redirect the trainer's browser to an attacker-controlled domain, enabling phishing and leaking the wger URL structure (including the impersonated user's user_pk) via the Referer header.
CVE-2026-86205 Medium · 5.4 CWE-601 Sep 6, 2026
h3 before 2.0.1-rc.18 Open Redirect via redirectBack()
h3 versions before 2.0.1-rc.18 contain an open redirect vulnerability in the redirectBack() utility that fails to sanitize protocol-relative paths in the Referer header pathname. Attackers can craft a same-origin URL with a double-slash path segment that passes origin validation but produces a Location header interpreted by browsers as a protocol-relative redirect to an external domain.
CVE-2026-81423 Medium · 4.3 CWE-601 Sep 5, 2026
Accept Stripe Payments < 2.1.4 - Open Redirect via IPN Handler
The Accept Stripe Payments WordPress plugin before 2.1.4 does not validate a user-supplied URL before using it in a redirect, allowing unauthenticated attackers to redirect visitors to an arbitrary external website, which can be leveraged for phishing.
CVE-2026-85676 Medium · 4.3 CWE-601 Sep 4, 2026
Dub Open Redirect via Unrestricted redir_url Parameter
Dub contains an open redirect vulnerability in the redir_url query parameter that is accepted on every short link without validation or domain allowlist enforcement. Attackers can append the redir_url parameter to any short link to redirect visitors to arbitrary external URLs through the trusted Dub domain, bypassing destination blacklists and potentially enabling phishing attacks with link cloaking enabled.
CVE-2026-49456 Low · 3.1 CWE-601 Sep 3, 2026
Waku: Open Redirect via `unstable_redirect` Helper
Waku is the minimal React framework. Prior to version 1.0.0-beta.1, the unstable_redirect() helper exported from waku/router/server (packages/waku/src/router/define-router.tsx:156–161) accepts an arbitrary string and reflects it unchanged into the HTTP Location response header with no URL validation, scheme restriction, or path-only enforcement. Any application that passes user-controlled input to this helper — the natural pattern documented in the JSDoc and official fixtures — is vulnerable to open redirect attacks. An attacker who convinces a victim to click a crafted link can silently redirect the browser to an arbitrary external domain, enabling phishing, credential harvesting, and OAuth token theft. Additionally, scheme-relative URLs (//evil.example/) bypass naive https?://-only allow-list filters that developers might add as ad-hoc mitigations. This issue has been patched in version 1.0.0-beta.1.