CVE-2026-50168

Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass

Published Jun 22, 2026 CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed

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, 21.2.15, 20.3.22, and 19.2.23, an issue in the @angular/platform-server package allows remote attackers to bypass host allowlist constraints and direct server-side outgoing requests to arbitrary external endpoints. This occurs due to a parser differential between the strict WHATWG URL parser used for allowlist validation and the lenient Domino URL parser used to initialize the server emulated DOM. When a server-side request contains a malformed URL with a double port structure (e.g., http://evil.com:80:80/path), Node's strict URL.canParse(url) logic returns false and skips host check validation entirely. However, the same malformed URL is later accepted and parsed leniently by Domino's internal parser, which resolves the origin to http://evil.com:80. The Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) then resolves all relative backend HTTP requests against this adopted origin, executing the SSRF attack. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.

Analysis

Technical impact

An attacker can craft a malformed URL containing a double port specification (for example, http://evil.com:80:80/path) that is rejected by Node’s strict WHATWG URL parser but is accepted by Domino’s lenient parser used by the server‑side rendering component. Because the allowlist validation is skipped for such URLs, the application can initiate outbound HTTP requests to arbitrary external domains, enabling SSRF exploitation. The weakness is identified by CWE‑346 (Information Exposure through Suspicion of an Information, Access Control or Critical System Function) and CWE‑918 (Server‑Side Request Forgery).

Affected Systems

Angular library v22.0.0‑rc.2, v21.2.15, v20.3.22, and v19.2.23 and any earlier releases of @angular/platform‑server that have not been updated to these patches.

Risk and Exploitability

The CVSS score of 8.8 indicates a high severity vulnerability with potential for significant impact. EPSS data is not available, so the quantified likelihood of exploitation is unknown, and the vulnerability is not listed in the CISA KEV catalog. Based on the description, the likely attack vector is a remote attacker delivering a crafted SSR request to a vulnerable application. If exploited, the attacker can expose internal resources, exfiltrate data, or pivot to further attacks within the network.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

angular

affected

Version	Status	Constraints
`>= 22.0.0-next.0, < 22.0.0-rc.2`	affected	—
`>= 21.0.0-next.0, < 21.2.15`	affected	—
`>= 20.0.0-next.0, < 20.3.22`	affected	—
`>= 19.0.0-next.0, < 19.2.23`	affected	—
`<= 18.2.14`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:angular:angular::::::node.js::*
	cpe:2.3:a:angular:angular::::::node.js::*
	cpe:2.3:a:angular:angular::::::node.js::*
	cpe:2.3:a:angular:angular::::::node.js::*
	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: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: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: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::*

No data.

Vendor Product Versions

Angular

Version	Status	Scheme	Platform
`[22.0.0-next.0,22.0.0-rc.2)`	affected	semver	—
`[21.0.0-next.0,21.2.15)`	affected	semver	—
`[20.0.0-next.0,20.3.22)`	affected	semver	—
`[19.0.0-next.0,19.2.23)`	affected	semver	—
`[0,18.2.14]`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade Angular to at least version 22.0.0-rc.2, 21.2.15, 20.3.22, or 19.2.23 where the URL parser differential has been corrected.
If an upgrade cannot be applied immediately, add a pre‑processing validation step that rejects URLs failing strict WHATWG parsing before the SSR interceptor processes them.
Implement outbound request filtering on the server or in a reverse proxy to restrict which external hosts can be contacted, mitigating potential SSRF impact.

Generated by OpenCVE AI on June 22, 2026 at 18:26 UTC.

Tracking

Advisories

Source	ID	Title
Github GHSA	GHSA-xrxm-cp7j-8xf6	@angular/platform-server: URL Parser Differential leading to SSRF Allowlist Bypass

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.237% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/angular/angular/pull/68928
https://github.com/angular/angular/security/advisories/GHSA-xrxm-cp7j-8xf6
https://nvd.nist.gov/vuln/detail/CVE-2026-50168
https://www.cve.org/CVERecord?id=CVE-2026-50168

History

Jul 14, 2026 12:15 AM Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2026-50168 https://www.cve.org/CVERecord?id=CVE-2026-50168
Metrics	threat_severity `None`	cvssV3_1 `{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'}` threat_severity `Important`

Jun 22, 2026 9:15 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Angular Angular angular
Vendors & Products		Angular Angular angular

Jun 22, 2026 6:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jun 22, 2026 5:30 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values 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, 21.2.15, 20.3.22, and 19.2.23, an issue in the @angular/platform-server package allows remote attackers to bypass host allowlist constraints and direct server-side outgoing requests to arbitrary external endpoints. This occurs due to a parser differential between the strict WHATWG URL parser used for allowlist validation and the lenient Domino URL parser used to initialize the server emulated DOM. When a server-side request contains a malformed URL with a double port structure (e.g., http://evil.com:80:80/path), Node's strict URL.canParse(url) logic returns false and skips host check validation entirely. However, the same malformed URL is later accepted and parsed leniently by Domino's internal parser, which resolves the origin to http://evil.com:80. The Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) then resolves all relative backend HTTP requests against this adopted origin, executing the SSRF attack. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.
Title		Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass
Weaknesses		CWE-346 CWE-918
References		https://github.com/angular/angular/pull/68928 https://github.com/angular/angular/security/advisories/GHSA-xrxm-cp7j-8xf6
Metrics		cvssV4_0 `{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}`