CWE-601
AllowedURL Redirection to Untrusted Site ('Open Redirect')
Abstraction: Base · Status: Draft
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
2448 vulnerabilities reference this CWE, most recent first.
CVE-2026-21879 (GCVE-0-2026-21879)
Vulnerability from cvelistv5 – Published: 2026-01-08 00:51 – Updated: 2026-01-08 18:34- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| URL | Tags |
|---|---|
| https://github.com/kanboard/kanboard/security/adv… | x_refsource_CONFIRM |
| https://github.com/kanboard/kanboard/commit/93bca… | x_refsource_MISC |
| https://github.com/kanboard/kanboard/releases/tag… | x_refsource_MISC |
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CVE-2026-21826 (GCVE-0-2026-21826)
Vulnerability from cvelistv5 – Published: 2026-06-05 05:58 – Updated: 2026-06-09 14:38- CWE-601 - URL redirection to untrusted site ('open redirect')
| Vendor | Product | Version | |
|---|---|---|---|
| HCLSoftware | Digital Experience & DX Compose |
Affected:
9.5
|
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CVE-2026-21741 (GCVE-0-2026-21741)
Vulnerability from cvelistv5 – Published: 2026-04-14 15:39 – Updated: 2026-04-14 16:15- CWE-601 - Execute unauthorized code or commands
| Vendor | Product | Version | |
|---|---|---|---|
| Fortinet | FortiNAC-F |
Affected:
7.6.0 , ≤ 7.6.5
(semver)
Affected: 7.4.0 , ≤ 7.4.3 (semver) Affected: 7.2.0 , ≤ 7.2.9 (semver) |
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CVE-2026-21295 (GCVE-0-2026-21295)
Vulnerability from cvelistv5 – Published: 2026-03-11 02:19 – Updated: 2026-08-27 22:09- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect') (CWE-601)
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/magento… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe Commerce |
Affected:
0 , ≤ 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16
(custom)
Unaffected: 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17 (custom) |
|
| Adobe | Adobe Commerce B2B |
Affected:
0 , ≤ 1.5.3-alpha3, 1.5.2-p3, 1.4.2-p8, 1.3.5-p13, 1.3.4-p15, 1.3.3-p16
(custom)
Unaffected: 1.5.3-beta1, 1.5.2-p4, 1.4.2-p9, 1.3.5-p14, 1.3.4-p16, 1.3.3-p17 (custom) |
|
| Adobe | Magento Open Source |
Affected:
0 , ≤ 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15
(custom)
Unaffected: 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16 (custom) |
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CVE-2026-20994 (GCVE-0-2026-20994)
Vulnerability from cvelistv5 – Published: 2026-03-16 04:32 – Updated: 2026-05-20 02:17- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Mobile | Samsung Account |
Unaffected:
15.5.01.1
|
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CVE-2026-20178 (GCVE-0-2026-20178)
Vulnerability from cvelistv5 – Published: 2026-06-17 16:28 – Updated: 2026-06-17 18:13- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Webex App |
Affected:
N/A
|
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GCVE-1-2026-20146 (CVE-2026-67178)
Vulnerability from gna-1 – Published: 2026-07-28 14:30 – Updated: 2026-07-28 14:30- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| URL | Tags |
|---|---|
| https://github.com/MISP/MISP/commit/15becd3b21245… | patch |
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CVE-2026-20123 (GCVE-0-2026-20123)
Vulnerability from cvelistv5 – Published: 2026-02-04 16:11 – Updated: 2026-02-04 16:40- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Evolved Programmable Network Manager (EPNM) |
Affected:
7.1.1
Affected: 7.1.2.1 Affected: 7.1.3 Affected: 7.1.2 Affected: 7.1.0 Affected: 8.0.0 Affected: 8.0.0.1 Affected: 7.1.3.1 Affected: 7.1.4 Affected: 8.1.0 Affected: 8.0.1 Affected: 7.1.4.1 Affected: 8.0.1.1 |
|
| Cisco | Cisco Prime Infrastructure |
Affected:
3.10.0
Affected: 3.10.2 Affected: 3.10.3 Affected: 3.10 Affected: 3.10.1 Affected: 3.10 Update 01 Affected: 3.10.4 Affected: 3.10.4 Update 01 Affected: 3.10.4 Update 02 Affected: 3.10.4 Update 03 Affected: 3.10.5 Affected: 3.10.6 Affected: 3.10.6 Update 01 Affected: 3.10.6 Security Update 03 |
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GCVE-1-2026-20101 (CVE-2026-10856)
Vulnerability from gna-1 – Published: 2026-06-04 13:15 – Updated: 2026-06-04 13:17- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| URL | Tags |
|---|---|
| https://github.com/MISP/MISP/commit/f879f16fb5db7… | patch |
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GCVE-1-2026-20083 (CVE-2026-10861)
Vulnerability from gna-1 – Published: 2026-06-04 13:24 – Updated: 2026-06-04 13:26 X_Open Source- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
| URL | Tags |
|---|---|
| https://github.com/MISP/MISP/commit/ae760b7bf534f… | patch |
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"value": "\u003cp\u003eAn open redirect vulnerability existed in \u003ccode\u003eMISP UsersController::routeafterlogin()\u003c/code\u003e because the value stored in the \u003ccode\u003epre_login_requested_url\u003c/code\u003e session key was used as the post-login redirect destination without sufficiently enforcing that it was a local application path.\u003c/p\u003e\n\u003cp\u003eAn unauthenticated remote attacker could craft a link that causes a victim to visit a trusted MISP instance and, after successful authentication, be redirected to an attacker-controlled external URL. This could be abused to increase the credibility of phishing attacks, redirect users to counterfeit login pages, or deliver attacker-controlled content from an untrusted domain. CWE-601 describes this weakness as accepting user-controlled input that specifies an external link and using it in a redirect, with phishing as a common consequence. \u003c/p\u003e\n\u003cp\u003eThe patch mitigates the issue by decoding and parsing the URL, rejecting URLs with a scheme, host, user component, missing or non-local path, and protocol-relative forms such as \u003ccode\u003e//example.com\u003c/code\u003e and \u003ccode\u003e/\\example.com\u003c/code\u003e.\u003c/p\u003e\u003cbr\u003e"
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Mitigation MIT-5
Strategy: Input Validation
- 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
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 MIT-21.2
Strategy: Enforcement by Conversion
- 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
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 MIT-6
Strategy: Attack Surface Reduction
- 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 MIT-29
Strategy: Firewall
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.