Common Weakness Enumeration

CWE-1021

Allowed

Improper Restriction of Rendered UI Layers or Frames

Abstraction: Base · Status: Incomplete

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

486 vulnerabilities reference this CWE, most recent first.

CVE-2026-87995 (GCVE-0-2026-87995)

Vulnerability from cvelistv5 – Published: 2026-09-09 21:26 – Updated: 2026-09-10 17:54

Title

Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin

Summary

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.11 until 0.11.1, src/lib/components/chat/FileNav/PortPreview.svelte rendered terminal port content in an iframe sandbox containing both allow-scripts and allow-same-origin. Because the terminal proxy serves that content from the Open WebUI origin, an authenticated user with access to a shared terminal server could host script on a previewed port and take over a victim's account when the victim opened the preview. This issue is fixed in version 0.11.1.

Severity

8.7 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 17:54 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/open-webui/open-webui/security…	x_refsource_CONFIRM
https://github.com/open-webui/open-webui/commit/5…	x_refsource_MISC
https://github.com/open-webui/open-webui/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-webui	open-webui	Affected: >= 0.8.11, < 0.11.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-84388 (GCVE-0-2026-84388)

Vulnerability from cvelistv5 – Published: 2026-09-22 14:12 – Updated: 2026-09-26 23:12

Summary

A improper restriction of rendered ui layers or frames vulnerability in Fortinet FortiPAM Chrome Extension 8.0 all versions, FortiPAM Chrome Extension 7.4 all versions may allow attacker to information disclosure via remote unauthenticated attack

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-22 14:42 UTC

CWE

CWE-1021 - Information disclosure

Assigner

fortinet mitre root Scorecard

References

1 reference

URL	Tags
https://fortiguard.fortinet.com/psirt/FG-IR-26-168

Impacted products

1 product

Vendor	Product	Version
Fortinet	FortiPAM Chrome Extension	Affected: 8.0.1 cpe:2.3:a:fortinet:fortipam_chrome_extension:8.0.1:::::::*

Show details on NVD website

JSON

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CVE-2026-75548 (GCVE-0-2026-75548)

Vulnerability from cvelistv5 – Published: 2026-08-27 21:30 – Updated: 2026-08-31 15:43

Title

Ebyte NA111-M Improper Restriction of Rendered UI Layers or Frames

Summary

The affected Ebyte device web management interface does not restrict the interface from being rendered within an external frame. An unauthenticated remote attacker could use a crafted webpage to mislead an authenticated administrator into initiating unintended configuration changes or disruptive actions.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-28 13:49 UTC

CWE

CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

icscert icscert root Scorecard

References

2 references

URL	Tags
https://www.cisa.gov/news-events/ics-advisories/i…
https://github.com/cisagov/CSAF/blob/develop/csaf…

Impacted products

1 product

Vendor	Product	Version
Ebyte	Ebyte NA111-M Firmware	Affected: 9013-2-17

Credits

Jithin Nambiar reported this vulnerability to CISA.

Show details on NVD website

JSON

To clipboard

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CVE-2026-71177 (GCVE-0-2026-71177)

Vulnerability from cvelistv5 – Published: 2026-09-23 14:02 – Updated: 2026-09-23 15:23

Summary

Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Improper Restriction of Rendered UI Layers or Frames vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Elevation of privileges and Session theft.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 15:22 UTC

CWE

CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

dell mitre root Scorecard

References

1 reference

URL	Tags
https://www.dell.com/support/kbdoc/en-ca/00050359…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Dell	Secure Connect Gateway (SCG) Policy Manager	Affected: 0 , < 5.36.00.16 or later (semver)

Date Public

2026-08-31 06:30

Show details on NVD website

JSON

To clipboard

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CVE-2026-70608 (GCVE-0-2026-70608)

Vulnerability from cvelistv5 – Published: 2026-08-05 17:27 – Updated: 2026-08-05 18:46

Title

Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.

Severity

7.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 18:14 UTC

CWE

CWE-693 - Protection Mechanism Failure
CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

GitHub_M mitre root Scorecard

References

10 references

URL	Tags
https://github.com/electron/electron/security/adv…	x_refsource_CONFIRM
https://github.com/electron/electron/pull/51437	x_refsource_MISC
https://github.com/electron/electron/pull/51438	x_refsource_MISC
https://github.com/electron/electron/pull/51439	x_refsource_MISC
https://github.com/electron/electron/commit/3ff23…	x_refsource_MISC
https://github.com/electron/electron/commit/57cbe…	x_refsource_MISC
https://github.com/electron/electron/commit/68cf8…	x_refsource_MISC
https://github.com/electron/electron/releases/tag…	x_refsource_MISC
https://github.com/electron/electron/releases/tag…	x_refsource_MISC
https://github.com/electron/electron/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
electron	electron	Affected: < 39.8.10 Affected: >= 40.0.0-alpha.1, < 41.10.3 Affected: >= 42.0.0-alpha.1, < 42.0.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-70600 (GCVE-0-2026-70600)

Vulnerability from cvelistv5 – Published: 2026-08-05 15:40 – Updated: 2026-08-06 14:21

Title

Electron: Cross-origin iframe can position native autofill popup

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, the native autofill popup could be positioned by a cross-origin iframe outside that iframe's bounds, over the embedding page's UI, enabling clickjacking or spoofing of trusted UI. Apps are only affected if they embed untrusted content in iframes within windows that also display trusted UI. Apps that do not embed untrusted third-party content are not affected. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-06 14:21 UTC

CWE

CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

GitHub_M mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/electron/electron/security/adv…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
electron	electron	Affected: < 39.8.8 Affected: >= 40.0.0-alpha.1, < 40.9.0 Affected: >= 41.0.0-alpha.1, < 41.2.1 Affected: >= 42.0.0-alpha.1, < 42.0.0-beta.3

Show details on NVD website

JSON

To clipboard

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CVE-2026-70486 (GCVE-0-2026-70486)

Vulnerability from cvelistv5 – Published: 2026-08-04 20:01 – Updated: 2026-08-05 14:29

Title

Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

Summary

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, the terminal file-preview serveUrl iframe branch always granted allow-same-origin together with allow-scripts for HTML files served from the application origin. Any authenticated user with access to a configured terminal server could cause script in a previewed file to run in the Open WebUI origin, read the victim's session token from localStorage, and take over the account, with possible server-side code execution if the victim was an admin or held workspace.functions. This issue is fixed in 0.11.0.

Severity

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 13:51 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/open-webui/open-webui/security…	x_refsource_CONFIRM
https://github.com/open-webui/open-webui/pull/26907	x_refsource_MISC
https://github.com/open-webui/open-webui/commit/6…	x_refsource_MISC
https://github.com/open-webui/open-webui/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-webui	open-webui	Affected: >= 0.9.0, < 0.11.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-58595 (GCVE-0-2026-58595)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:05 – Updated: 2026-09-25 18:20

Title

Microsoft Bing App for IOS Spoofing Vulnerability

Summary

Improper restriction of rendered ui layers or frames in Microsoft Bing App for IOS allows an unauthorized attacker to perform spoofing over a network.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-16 15:39 UTC

CWE

CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

microsoft mitre root Scorecard

References

1 reference

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
Microsoft	Microsoft Bing Search for iOS	Affected: 1.0 , < 33.4.440529002 (custom) cpe:2.3:a:microsoft:bing_search::::::ios::*

Date Public

2026-07-14 14:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-47723 (GCVE-0-2026-47723)

Vulnerability from cvelistv5 – Published: 2026-07-23 20:17 – Updated: 2026-07-24 13:54

Title

nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)

Summary

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase. Version 0.3.1 fixes the issue.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-24 13:53 UTC

CWE

CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/forgekeep/nebula-mesh/security…	x_refsource_CONFIRM
https://github.com/forgekeep/nebula-mesh/commit/b…	x_refsource_MISC
https://github.com/forgekeep/nebula-mesh/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
juev	nebula-mesh	Affected: < 0.3.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-44762 (GCVE-0-2026-44762)

Vulnerability from cvelistv5 – Published: 2026-08-11 00:11 – Updated: 2026-08-11 14:33

Title

Security Misconfiguration in SAP Data Services Management Console

Summary

SAP Data Services Management Console allows an overly permissive Content Security Policy (CSP) configuration and lacks certain restrictive directives, which could enable an authenticated malicious user to leverage this weakness in combination with another vulnerability to inject and execute malicious scripts within the application's context. Successful exploitation may result in a low impact on confidentiality and integrity, with no impact on the availability of the application.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 13:25 UTC

CWE

CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Assigner

sap mitre root Scorecard

References

2 references

URL	Tags
https://me.sap.com/notes/3739913
https://url.sap/sapsecuritypatchday

Impacted products

1 product

Vendor	Product	Version
SAP_SE	SAP Data Services Management Console	Affected: SBOP_DS_MANAGEMENT_CONSOLE 4.3 Affected: 2025

Show details on NVD website

JSON

To clipboard

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Mitigation

Implementation

The use of X-Frame-Options allows developers of web content to restrict the usage of their application within the form of overlays, frames, or iFrames. The developer can indicate from which domains can frame the content.
The concept of X-Frame-Options is well documented, but implementation of this protection mechanism is in development to cover gaps. There is a need for allowing frames from multiple domains.

Mitigation

Implementation

A developer can use a "frame-breaker" script in each page that should not be framed. This is very helpful for legacy browsers that do not support X-Frame-Options security feature previously mentioned.
It is also important to note that this tactic has been circumvented or bypassed. Improper usage of frames can persist in the web application through nested frames. The "frame-breaking" script does not intuitively account for multiple nested frames that can be presented to the user.

Mitigation

Implementation

This defense-in-depth technique can be used to prevent the improper usage of frames in web applications. It prioritizes the valid sources of data to be loaded into the application through the usage of declarative policies. Based on which implementation of Content Security Policy is in use, the developer should use the "frame-ancestors" directive or the "frame-src" directive to mitigate this weakness. Both directives allow for the placement of restrictions when it comes to allowing embedded content.

Mitigation

Implementation

In addition to frames or iframes as previously mentioned, the web application is expected to place restrictions on whether it is allowed to be rendered within objects, embed, or applet elements.

CAPEC-103: Clickjacking

An adversary tricks a victim into unknowingly initiating some action in one system while interacting with the UI from a seemingly completely different, usually an adversary controlled or intended, system.

CAPEC-181: Flash File Overlay

An attacker creates a transparent overlay using flash in order to intercept user actions for the purpose of performing a clickjacking attack. In this technique, the Flash file provides a transparent overlay over HTML content. Because the Flash application is on top of the content, user actions, such as clicks, are caught by the Flash application rather than the underlying HTML. The action is then interpreted by the overlay to perform the actions the attacker wishes.

CAPEC-222: iFrame Overlay

In an iFrame overlay attack the victim is tricked into unknowingly initiating some action in one system while interacting with the UI from seemingly completely different system.

CAPEC-504: Task Impersonation

An adversary, through a previously installed malicious application, impersonates an expected or routine task in an attempt to steal sensitive information or leverage a user's privileges.

CAPEC-506: Tapjacking

An adversary, through a previously installed malicious application, displays an interface that misleads the user and convinces them to tap on an attacker desired location on the screen. This is often accomplished by overlaying one screen on top of another while giving the appearance of a single interface. There are two main techniques used to accomplish this. The first is to leverage transparent properties that allow taps on the screen to pass through the visible application to an application running in the background. The second is to strategically place a small object (e.g., a button or text field) on top of the visible screen and make it appear to be a part of the underlying application. In both cases, the user is convinced to tap on the screen but does not realize the application that they are interacting with.

CAPEC-587: Cross Frame Scripting (XFS)

This attack pattern combines malicious Javascript and a legitimate webpage loaded into a concealed iframe. The malicious Javascript is then able to interact with a legitimate webpage in a manner that is unknown to the user. This attack usually leverages some element of social engineering in that an attacker must convinces a user to visit a web page that the attacker controls.

CAPEC-654: Credential Prompt Impersonation

An adversary, through a previously installed malicious application, impersonates a credential prompt in an attempt to steal a user's credentials.

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