CVE-2026-50556
Angular: Missing `<noscript>` Raw-Text Serialization Escaping leads to Cross-Site Scripting (XSS) in Angular SSR
Description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino) when serializing the content of <noscript> elements. When rendering dynamic text content inside a <noscript> element via template bindings (such as {{ value }} or [textContent]), the template engine expects the browser to render the content safely. Under Server-Side Rendering (SSR), domino is configured with scripting enabled, meaning <noscript> is treated as a raw-text element. However, domino's serializer completely omitted <noscript> from the list of raw-text elements requiring closing-tag escaping during DOM serialization. As a result, any occurrence of </noscript> in the bound dynamic text was never escaped under any circumstances. The unescaped closing tag was serialized directly into the output HTML (e.g. <noscript></noscript><script>alert(1)</script></noscript>). When parsed by a browser, it closes the <noscript> block early, allowing the injected <script> block to execute in the user's browser context, causing same-origin Cross-Site Scripting (XSS). This vulnerability is fixed in 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25.
INFO
Published Date :
June 22, 2026, 6:16 p.m.
Last Modified :
July 15, 2026, 1:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-50556
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Angular to version 22.0.0-rc.2 or later.
- Update Angular to version 21.2.16 or later.
- Update Angular to version 20.3.24 or later.
- Update Angular to version 19.2.25 or later.
Public PoC/Exploit Available at Github
CVE-2026-50556 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-50556.
| URL | Resource |
|---|---|
| https://github.com/angular/angular/issues/68903 | Issue Tracking |
| https://github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8qx | Third Party Advisory |
| https://github.com/angular/domino/pull/29 | Issue Tracking Patch |
| https://access.redhat.com/security/cve/CVE-2026-50556 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2491459 | Third Party Advisory |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50556.json | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-50556 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-50556
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Config files for my GitHub profile.
config github-config
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-50556 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-50556 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 15, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:jboss_fuse:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Fuse 7', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'packageName': 'dotnet5.0-build-reference-packages', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:jboss_fuse:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Fuse 7', 'packageName': 'platform-server', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] -
Modified Analysis by [email protected]
Jul. 09, 2026
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions up to (including) 18.2.14 *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions from (including) 19.0.0 up to (excluding) 19.2.25 *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.3.24 *cpe:2.3:a:angularjs:angularjs:22.0.0:next0:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next1:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next10:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next11:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next12:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next2:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next3:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next4:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next5:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next6:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next7:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next8:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next9:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:rc0:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:rc1:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions from (including) 21.0.0 up to (excluding) 21.2.16 OR *cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* versions up to (including) 18.2.14 *cpe:2.3:a:angular:angular:22.0.0:next0:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next1:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next2:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next3:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next4:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next5:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next6:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next7:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next8:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next10:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next11:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next12:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:next9:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:rc0:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:22.0.0:rc1:*:*:*:node.js:*:* *cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* versions from (including) 19.0.0 up to (excluding) 19.2.25 *cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* versions from (including) 20.0.0 up to (excluding) 20.3.24 *cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* versions from (including) 21.0.0 up to (excluding) 21.2.16 Added Reference Type redhat-SADP: https://access.redhat.com/security/cve/CVE-2026-50556 Types: Third Party Advisory Added Reference Type redhat-SADP: https://bugzilla.redhat.com/show_bug.cgi?id=2491459 Types: Third Party Advisory Added Reference Type redhat-SADP: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50556.json Types: Third Party Advisory -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 03, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:jboss_fuse:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Fuse 7', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:jboss_fuse:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Fuse 7', 'defaultStatus': 'unaffected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:jboss_fuse:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Fuse 7', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}] Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-79 Added Reference https://access.redhat.com/security/cve/CVE-2026-50556 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2491459 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50556.json -
Initial Analysis by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions up to (including) 18.2.14 *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions from (including) 19.0.0 up to (excluding) 19.2.25 *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.3.24 *cpe:2.3:a:angularjs:angularjs:22.0.0:next0:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next1:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next10:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next11:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next12:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next2:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next3:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next4:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next5:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next6:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next7:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next8:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:next9:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:rc0:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:22.0.0:rc1:*:*:*:*:*:* *cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:* versions from (including) 21.0.0 up to (excluding) 21.2.16 Added Reference Type GitHub, Inc.: https://github.com/angular/angular/issues/68903 Types: Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8qx Types: Third Party Advisory Added Reference Type GitHub, Inc.: https://github.com/angular/domino/pull/29 Types: Issue Tracking, Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-50556', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-22T21:14:35.418340Z'} -
New CVE Received by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'angular', 'product': 'angular', 'versions': [{'status': 'affected', 'version': '>= 22.0.0-next.0, < 22.0.0-rc.2'}, {'status': 'affected', 'version': '>= 21.0.0-next.0, < 21.2.16'}, {'status': 'affected', 'version': '>= 20.0.0-next.0, < 20.3.24'}, {'status': 'affected', 'version': '>= 19.0.0-next.0, < 19.2.25'}, {'status': 'affected', 'version': '<= 18.2.14'}]}] Added Description Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino) when serializing the content of <noscript> elements. When rendering dynamic text content inside a <noscript> element via template bindings (such as {{ value }} or [textContent]), the template engine expects the browser to render the content safely. Under Server-Side Rendering (SSR), domino is configured with scripting enabled, meaning <noscript> is treated as a raw-text element. However, domino's serializer completely omitted <noscript> from the list of raw-text elements requiring closing-tag escaping during DOM serialization. As a result, any occurrence of </noscript> in the bound dynamic text was never escaped under any circumstances. The unescaped closing tag was serialized directly into the output HTML (e.g. <noscript></noscript><script>alert(1)</script></noscript>). When parsed by a browser, it closes the <noscript> block early, allowing the injected <script> block to execute in the user's browser context, causing same-origin Cross-Site Scripting (XSS). This vulnerability is fixed in 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-79 Added Reference https://github.com/angular/angular/issues/68903 Added Reference https://github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8qx Added Reference https://github.com/angular/domino/pull/29