Common Weakness Enumeration
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.
2518 vulnerabilities reference this CWE, most recent first.
CVE-2026-81029 (GCVE-0-2026-81029)
Vulnerability from cvelistv5 – Published: 2026-08-26 15:44 – Updated: 2026-08-26 18:32
VLAI
EPSS
VEX
Title
OpenMetadata before 2.0.0 JWT Disclosure via Unvalidated SAML and OIDC Redirect URI
Summary
OpenMetadata accepts a caller-supplied post-authentication redirect target and appends the issued token to it. SamlLoginServlet reads the callback request parameter and stores it in the HTTP session without comparing it against any configured or registered destination, and the assertion consumer servlet later formats that stored value into a URL carrying the freshly issued JWT together with the account's email and name before sending the redirect. The OIDC and OAuth2 handler follows the same pattern with its own redirect parameter and the issued identity token. A request naming a destination the attacker controls therefore causes the server to deliver a valid token for whoever completes the login to that destination. Because the token authenticates API calls as that account, a user who follows such a link and authenticates hands over control of their account. Version 2.0.0 removes the caller-supplied callback parameter; no 1.x release validates it.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:32 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/open-metadata/OpenMetadata | product |
| https://github.com/open-metadata/OpenMetadata/iss… | issue-tracking |
| https://github.com/open-metadata/OpenMetadata/blo… | technical-description |
| https://www.vulncheck.com/advisories/openmetadata… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-metadata | OpenMetadata |
Affected:
0 , < 2.0.0
(semver)
cpe:2.3:a:open-metadata:openmetadata:*:*:*:*:*:*:*:* |
Date Public
2026-08-26 00:00
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CVE-2026-80200 (GCVE-0-2026-80200)
Vulnerability from cvelistv5 – Published: 2026-08-25 23:19 – Updated: 2026-08-28 15:18
VLAI
EPSS
VEX
Title
Kimai before 2.53.0 Open Redirect via RelayState
Summary
Kimai before 2.53.0 contains an open redirect vulnerability in the SAML authentication success handler that accepts unvalidated RelayState POST parameters as redirect destinations. Attackers with IdP access can supply malicious RelayState values to redirect authenticated users to attacker-controlled URLs for credential theft or phishing attacks.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:58 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kimai/kimai/security/advisorie… | vendor-advisory |
| https://www.vulncheck.com/advisories/kimai-before… | third-party-advisory |
Impacted products
Date Public
2026-04-11 00:00
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CVE-2026-79786 (GCVE-0-2026-79786)
Vulnerability from cvelistv5 – Published: 2026-08-25 18:23 – Updated: 2026-08-28 22:33
VLAI
EPSS
VEX
Title
Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration
Summary
Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their authorization codes upon consent approval, and exchange them for access tokens to hijack MCP sessions.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 22:32 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/coroot/coroot | product |
| https://github.com/coroot/coroot/issues/929 | issue-tracking |
| https://github.com/coroot/coroot/blob/v1.24.5/api… | technical-description |
| https://www.vulncheck.com/advisories/coroot-1.20.… | third-party-advisory |
Impacted products
Date Public
2026-07-01 00:00
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CVE-2026-79662 (GCVE-0-2026-79662)
Vulnerability from cvelistv5 – Published: 2026-08-25 11:33 – Updated: 2026-08-25 14:51
VLAI
EPSS
VEX
Title
Ech0 before 4.7.3 OAuth Redirect URI Validation Bypass
Summary
Ech0 through 4.5.6 contains an OAuth redirect URI validation vulnerability in parseAndValidateClientRedirect (internal/service/auth/auth.go) that compares only the scheme and host of the client-supplied redirect_uri against the admin-configured allowlist, ignoring path, query, and fragment components. The redirect_uri is embedded into the signed state JWT at login time without validation. An attacker can craft a redirect_uri whose host matches an allowed origin but whose path is attacker-influenced; after the OAuth exchange the victim is redirected to that path with a one-time exchange code in the query string. If the code leaks (e.g., via Referer, analytics, or an open redirect on that host), the attacker can trade it at the public POST /api/auth/exchange endpoint for the victim's access and refresh tokens. Fixed in 4.7.3.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:30 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/lin-snow/Ech0/security/advisor… | vendor-advisory |
| https://www.vulncheck.com/advisories/ech0-before-… | third-party-advisory |
Impacted products
Date Public
2026-05-03 00:00
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CVE-2026-78377 (GCVE-0-2026-78377)
Vulnerability from cvelistv5 – Published: 2026-09-09 09:21 – Updated: 2026-09-09 12:42
VLAI
EPSS
VEX
Title
Open Redirect in Yordam Informatics's Library Automation System
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 12:42 UTC
CWE
- CWE-601 - URL redirection to untrusted site ('open redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://siberguvenlik.gov.tr/guvenlik-bildirimler… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc. | Library Information and Document Automation Program |
Affected:
v22.1 , < v22.2
(custom)
|
Date Public
2026-09-09 09:19
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CVE-2026-78145 (GCVE-0-2026-78145)
Vulnerability from cvelistv5 – Published: 2026-08-23 22:45 – Updated: 2026-08-24 18:12 X_Open Source
VLAI
EPSS
VEX
Title
CTFd __init__.py _is_safe_url redirect
Summary
A vulnerability has been found in CTFd up to 3.8.4. The affected element is the function _is_safe_url of the file CTFd/utils/validators/__init__.py. Such manipulation of the argument Next leads to open redirect. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 5d8515842fd1ab2c3a9f2dde9ffca907aa334ea9. Upgrading the affected component is recommended.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 18:12 UTC
CWE
- CWE-601 - Open Redirect
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394533 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394533/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78145 | third-party-advisory |
| https://vuldb.com/submit/882469 | third-party-advisory |
| https://mblunt.dev/writeups/ctfd-open-redirect/ | exploit |
| https://github.com/CTFd/CTFd/pull/3026 | issue-trackingpatch |
| https://github.com/CTFd/CTFd/commit/5d8515842fd1a… | patch |
| https://github.com/CTFd/CTFd/releases/tag/3.8.4 | patch |
| https://github.com/CTFd/CTFd/ | product |
Impacted products
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CVE-2026-78079 (GCVE-0-2026-78079)
Vulnerability from cvelistv5 – Published: 2026-08-31 13:52 – Updated: 2026-09-01 13:59
VLAI
EPSS
VEX
Title
Joomla Extension - joomshaper.com - Privileged File Upload Bypass via Content Spoofing in Helix Ultimate < 2.2.10
Summary
Joomla Extension - joomshaper.com - Open Redirect via Base64 Return Parameter in Helix Ultimate < 2.2.10 - Return redirect parameters accepted arbitrary Base64 strings without verifying whether the resolved target was an internal site URL via Uri::isInternal.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 14:24 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.joomshaper.com/joomla-templates/helix… | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| joomshaper.com | Helix Ultimate extension for Joomla |
Affected:
1.0-2.2.9
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CVE-2026-77028 (GCVE-0-2026-77028)
Vulnerability from cvelistv5 – Published: 2026-08-21 12:13 – Updated: 2026-08-21 19:17
VLAI
EPSS
VEX
Title
Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66
Summary
Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 15:53 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.yootheme.com/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| yootheme.com | Zoo extension for Joomla |
Affected:
1.0.0-4.1.65
|
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CVE-2026-75833 (GCVE-0-2026-75833)
Vulnerability from cvelistv5 – Published: 2026-08-18 11:19 – Updated: 2026-08-18 13:42
VLAI
EPSS
VEX
Title
Grav API Plugin Open Redirect via Backslash Bypass
Summary
The Grav API plugin (getgrav/grav-plugin-api, bundled with Grav 2.0's admin-next/API stack) before version 1.0.14 contains an open redirect weakness in SsoController::sanitizeReturnTo(). The function rejects a literal '//' prefix but does not account for browsers normalizing backslashes to slashes in special (http/https) schemes, so a returnTo value such as '/\evil.com' passes the guard and is later resolved by the browser as the protocol-relative URL '//evil.com'. Following a legitimate OAuth login flow, an attacker-supplied returnTo parameter could redirect an authenticated victim to an attacker-controlled site for post-login phishing. Full browser-side exploitability depends on the admin-next SPA's client-side oauth-callback handler and was not independently verified by the reporter.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 13:41 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/getgrav/grav/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/grav-api-plu… | third-party-advisory |
Impacted products
Date Public
2026-08-03 00:00
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CVE-2026-75628 (GCVE-0-2026-75628)
Vulnerability from cvelistv5 – Published: 2026-08-20 00:40 – Updated: 2026-08-28 15:11
VLAI
EPSS
VEX
Title
Punk::OAuth2 versions before 0.03 for Perl allow an attacker-chosen off-site redirect after login because same_origin_path accepts a backslash or tab in the return parameter
Summary
Punk::OAuth2 versions before 0.03 for Perl allow an attacker-chosen off-site redirect after login because same_origin_path accepts a backslash or tab in the return parameter.
oauth2_login reads the return parameter from the initiation request, runs same_origin_path over it, and stores the survivor in the session flow record as the post-login redirect target. That check rejects a value that does not begin with a slash, one with a slash as its second byte, and one containing CR or LF. A backslash and a tab pass. The URL Standard treats a backslash as equivalent to a slash for special schemes, so `/\evil.example` parses with the authority `evil.example`. It also strips ASCII tab before parsing, so a tab between two leading slashes leaves `//evil.example`.
A crafted link to the application's own login route lands the victim on the attacker's site after a genuine authentication. The redirect carries no authorization code or access token.
Severity
5.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 15:11 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://metacpan.org/release/LNATION/Punk-OAuth2-… | release-notes |
| https://metacpan.org/release/LNATION/Punk-OAuth2-… | technical-description |
| https://datatracker.ietf.org/doc/html/rfc9700#sec… | technical-description |
| https://url.spec.whatwg.org/#relative-slash-state | technical-description |
| https://url.spec.whatwg.org/#concept-basic-url-parser | technical-description |
| http://www.openwall.com/lists/oss-security/2026/08/20/1 |
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Mitigation MIT-5
Implementation
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
Architecture and Design
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
Architecture and Design
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
Architecture and Design
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
Architecture and Design
Implementation
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
Operation
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.