CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
CVE-2026-33397 (GCVE-0-2026-33397)
Vulnerability from cvelistv5 – Published: 2026-03-26 13:46 – Updated: 2026-03-30 14:56
VLAI
Title
Angular SSR Vulnerable to Protocol-Relative URL Injection via Single Backslash Bypass
Summary
The Angular SSR is a server-rise rendering tool for Angular applications. Versions on the 22.x branch prior to 22.0.0-next.2, the 21.x branch prior to 21.2.3, and the 20.x branch prior to 20.3.21 have an Open Redirect vulnerability in `@angular/ssr` due to an incomplete fix for CVE-2026-27738. While the original fix successfully blocked multiple leading slashes (e.g., `///`), the internal validation logic fails to account for a single backslash (`\`) bypass. When an Angular SSR application is deployed behind a proxy that passes the `X-Forwarded-Prefix` header, an attacker provides a value starting with a single backslash, the internal validation failed to flag the single backslash as invalid, the application prepends a leading forward slash, resulting in a `Location` header containing the URL, and modern browsers interpret the `/\` sequence as `//`, treating it as a protocol-relative URL and redirecting the user to the attacker-controlled domain. Furthermore, the response lacks the `Vary: X-Forwarded-Prefix` header, allowing the malicious redirect to be stored in intermediate caches (Web Cache Poisoning). Versions 22.0.0-next.2, 21.2.3, and 20.3.21 contain a patch. Until the patch is applied, developers should sanitize the `X-Forwarded-Prefix` header in their `server.ts` before the Angular engine processes the request.
Severity
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/angular/angular-cli/security/a… | x_refsource_CONFIRM |
| https://github.com/angular/angular-cli/pull/32771 | x_refsource_MISC |
| https://github.com/advisories/GHSA-xh43-g2fq-wjrj | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| angular | angular-cli |
Affected:
>= 22.0.0-next.0, < 22.0.0-next.2
Affected: >= 21.0.0-next.0, < 21.2.3 Affected: >= 20.0.0-next.0, < 20.3.21 |
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CVE-2026-33506 (GCVE-0-2026-33506)
Vulnerability from cvelistv5 – Published: 2026-03-26 18:48 – Updated: 2026-03-26 19:52
VLAI
Title
DOM-Based XSS in Ory Polis Login Page
Summary
Ory Polis, formerly known as BoxyHQ Jackson, bridges or proxies a SAML login flow to OAuth 2.0 or OpenID Connect. Versions prior to 26.2.0 contain a DOM-based Cross-Site Scripting (XSS) vulnerability in Ory Polis's login functionality. The application improperly trusts a URL parameter (`callbackUrl`), which is passed to `router.push`. An attacker can craft a malicious link that, when opened by an authenticated user (or an unauthenticated user that later logs in), performs a client-side redirect and executes arbitrary JavaScript in the context of their browser. This could lead to credential theft, internal network pivoting, and unauthorized actions performed on behalf of the victim. Version 26.2.0 contains a patch for the issue.
Severity
8.8 (High)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ory/polis/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/ory/polis/releases/tag/v26.2.0 | x_refsource_MISC |
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CVE-2026-33510 (GCVE-0-2026-33510)
Vulnerability from cvelistv5 – Published: 2026-04-06 14:51 – Updated: 2026-04-06 15:41
VLAI
Title
DOM-Based XSS in Homarr /auth/login Redirect
Summary
Homarr is an open-source dashboard. Prior to 1.57.0, a DOM-based Cross-Site Scripting (XSS) vulnerability has been discovered in Homarr's /auth/login page. The application improperly trusts a URL parameter (callbackUrl), which is passed to redirect and router.push. An attacker can craft a malicious link that, when opened by an authenticated user, performs a client-side redirect and executes arbitrary JavaScript in the context of their browser. This could lead to credential theft, internal network pivoting, and unauthorized actions performed on behalf of the victim. This vulnerability is fixed in 1.57.0.
Severity
8.8 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/homarr-labs/homarr/security/ad… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| homarr-labs | homarr |
Affected:
< 1.57.0
|
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CVE-2026-33709 (GCVE-0-2026-33709)
Vulnerability from cvelistv5 – Published: 2026-04-03 22:00 – Updated: 2026-04-06 17:33
VLAI
Title
JupyterHub has an Open Redirect Vulnerability
Summary
JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to version 5.4.4, an open redirect vulnerability in JupyterHub allows attackers to construct links which, when clicked, take users to the JupyterHub login page, after which they are sent to an arbitrary attacker-controlled site outside JupyterHub instead of a JupyterHub page, bypassing JupyterHub's check to prevent this. This issue has been patched in version 5.4.4.
Severity
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jupyterhub/jupyterhub/security… | x_refsource_CONFIRM |
| https://github.com/jupyterhub/jupyterhub/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jupyterhub | jupyterhub |
Affected:
< 5.4.4
|
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CVE-2026-33868 (GCVE-0-2026-33868)
Vulnerability from cvelistv5 – Published: 2026-03-27 19:50 – Updated: 2026-03-31 18:54
VLAI
Title
Mastodon has a GET-Based Open Redirect via '/web/%2F<domain>'
Summary
Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.5.8, 4.4.15, and 4.3.21, an unauthenticated Open Redirect vulnerability (CWE-601) exists in the `/web/*` route due to improper handling of URL-encoded path segments. An attacker can craft a specially encoded URL that causes the application to redirect users to an arbitrary external domain, enabling phishing attacks and potential OAuth credential theft. The issue occurs because URL-encoded slashes (`%2F`) bypass Rails path normalization and are interpreted as host-relative redirects. Versions 4.5.8, 4.4.15, and 4.3.21 patch the issue.
Severity
4.3 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/mastodon/mastodon/security/adv… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-33885 (GCVE-0-2026-33885)
Vulnerability from cvelistv5 – Published: 2026-03-27 20:39 – Updated: 2026-03-31 14:00
VLAI
Title
Statamic has an Open Redirect on unauthenticated endpoints via URL parsing differential
Summary
Statamic is a Laravel and Git powered content management system (CMS). Prior to versions 5.73.16 and 6.7.2, the external URL detection used for redirect validation on unauthenticated endpoints could be bypassed, allowing users to be redirected to external URLs after actions like form submissions and authentication flows. This has been fixed in 5.73.16 and 6.7.2.
Severity
6.1 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/statamic/cms/security/advisori… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-34083 (GCVE-0-2026-34083)
Vulnerability from cvelistv5 – Published: 2026-04-02 16:14 – Updated: 2026-04-02 17:39
VLAI
Title
signalk-server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow
Summary
Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used to construct the OAuth2 redirect_uri. Because the redirectUri configuration is silently unset by default, an attacker can spoof the Host header to steal OAuth authorization codes and hijack user sessions in realistic deployments as The OIDC provider will then send the authorization code to whatever domain was injected. This issue has been patched in version 2.24.0.
Severity
6.1 (Medium)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/SignalK/signalk-server/securit… | x_refsource_CONFIRM |
| https://github.com/SignalK/signalk-server/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SignalK | signalk-server |
Affected:
< 2.24.0
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CVE-2026-34257 (GCVE-0-2026-34257)
Vulnerability from cvelistv5 – Published: 2026-04-14 00:08 – Updated: 2026-04-14 13:14
VLAI
Title
Open Redirect vulnerability in SAP NetWeaver Application Server ABAP
Summary
Due to an Open Redirect vulnerability in SAP NetWeaver Application Server ABAP, an unauthenticated attacker could craft malicious URL that, if accessed by a victim, they could be redirected to the page controlled by the attacker. This causes low impact on confidentiality and integrity of the application with no impact on availability.
Severity
6.1 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | SAP NetWeaver Application Server ABAP |
Affected:
SAP_BASIS 700
Affected: SAP_BASIS 701 Affected: SAP_BASIS 702 Affected: SAP_BASIS 731 Affected: SAP_BASIS 740 Affected: SAP_BASIS 750 Affected: SAP_BASIS 752 Affected: SAP_BASIS 753 Affected: SAP_BASIS 754 Affected: SAP_BASIS 755 Affected: SAP_BASIS 756 Affected: SAP_BASIS 757 Affected: SAP_BASIS 758 Affected: SAP_BASIS 816 |
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CVE-2026-34442 (GCVE-0-2026-34442)
Vulnerability from cvelistv5 – Published: 2026-03-31 21:28 – Updated: 2026-04-01 13:36
VLAI
Title
FreeScout: Host Header Injection Leading to External Resource Loading and Open Redirect in FreeScout
Summary
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, host header manipulation in FreeScout version (http://localhost:8080/system/status) allows an attacker to inject an arbitrary domain into generated absolute URLs. This leads to External Resource Loading and Open Redirect behavior. When the application constructs links and assets using the unvalidated Host header, user requests can be redirected to attacker-controlled domains and external resources may be loaded from malicious servers. This issue has been patched in version 1.8.211.
Severity
5.4 (Medium)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/freescout-help-desk/freescout/… | x_refsource_CONFIRM |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
| https://github.com/freescout-help-desk/freescout/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| freescout-help-desk | freescout |
Affected:
< 1.8.211
|
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"description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere",
"lang": "en",
"type": "CWE"
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}
],
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"name": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj",
"tags": [
"x_refsource_CONFIRM"
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"url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj"
},
{
"name": "https://github.com/freescout-help-desk/freescout/commit/889d75c8e3c15e6a7ddb6a4d4f65cc0379c29213",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/freescout-help-desk/freescout/commit/889d75c8e3c15e6a7ddb6a4d4f65cc0379c29213"
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{
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],
"source": {
"advisory": "GHSA-822g-7rw5-53xj",
"discovery": "UNKNOWN"
},
"title": "FreeScout: Host Header Injection Leading to External Resource Loading and Open Redirect in FreeScout"
}
},
"cveMetadata": {
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"cveId": "CVE-2026-34442",
"datePublished": "2026-03-31T21:28:19.830Z",
"dateReserved": "2026-03-27T18:18:14.894Z",
"dateUpdated": "2026-04-01T13:36:09.314Z",
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CVE-2026-34847 (GCVE-0-2026-34847)
Vulnerability from cvelistv5 – Published: 2026-04-02 19:19 – Updated: 2026-04-03 15:39
VLAI
Title
hoppscotch: Open redirect via `/enter?redirect=`
Summary
hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, the /enter page contains a DOM-based open redirect vulnerability. The redirect query parameter is directly used to construct a URL and redirect the user without proper validation. This issue has been patched in version 2026.3.0.
Severity
4.7 (Medium)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/hoppscotch/hoppscotch/security… | x_refsource_CONFIRM |
| https://github.com/hoppscotch/hoppscotch/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hoppscotch | hoppscotch |
Affected:
< 2026.3.0
|
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"attackVector": "NETWORK",
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"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
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"scope": "CHANGED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
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Mitigation ID: MIT-5
Phase: Implementation
Strategy: Input Validation
Description:
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- Use a list of approved URLs or domains to be used for redirection.
Mitigation
Phase: Architecture and Design
Description:
- Use an intermediate disclaimer page that provides the user with a clear warning that they are leaving the current site. Implement a long timeout before the redirect occurs, or force the user to click on the link. Be careful to avoid XSS problems (CWE-79) when generating the disclaimer page.
Mitigation ID: MIT-21.2
Phase: Architecture and Design
Strategy: Enforcement by Conversion
Description:
- When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
- For example, ID 1 could map to "/login.asp" and ID 2 could map to "http://www.example.com/". Features such as the ESAPI AccessReferenceMap [REF-45] provide this capability.
Mitigation
Phase: Architecture and Design
Description:
- Ensure that no externally-supplied requests are honored by requiring that all redirect requests include a unique nonce generated by the application [REF-483]. Be sure that the nonce is not predictable (CWE-330).
Mitigation ID: MIT-6
Phases: Architecture and Design, Implementation
Strategy: Attack Surface Reduction
Description:
- Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
- Many open redirect problems occur because the programmer assumed that certain inputs could not be modified, such as cookies and hidden form fields.
Mitigation ID: MIT-29
Phase: Operation
Strategy: Firewall
Description:
- Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
CAPEC-178: Cross-Site Flashing
An attacker is able to trick the victim into executing a Flash document that passes commands or calls to a Flash player browser plugin, allowing the attacker to exploit native Flash functionality in the client browser. This attack pattern occurs where an attacker can provide a crafted link to a Flash document (SWF file) which, when followed, will cause additional malicious instructions to be executed. The attacker does not need to serve or control the Flash document. The attack takes advantage of the fact that Flash files can reference external URLs. If variables that serve as URLs that the Flash application references can be controlled through parameters, then by creating a link that includes values for those parameters, an attacker can cause arbitrary content to be referenced and possibly executed by the targeted Flash application.