CVE-2026-50184

Angular: Request Credential & Cache Policy Stripping in Angular Service Worker

Published Jun 22, 2026 CVSS 4.0 · 5.7 Medium 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/service-worker package compromises the integrity of request-policy enforcement during request reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it reconstructs a new Request object using an internal helper function. During this reconstruction process, the helper function strips explicit client-defined safety parameters: the credentials configuration (such as credentials: 'omit') and the HTTP cache mode configuration (such as cache: 'no-store'). These are reverted back to standard browser-default parameters (credentials: 'same-origin' and default HTTP cache properties). This causes the browser to include active credentials (such as cookies or Authorization headers) on outbound requests where the client-side developer explicitly instructed they should be omitted, leading to potential session leaks. Additionally, it causes private or non-cacheable resources to be cached by the service worker's engine, making private page states accessible or persistent inside the client's local cache post-logout. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.

Analysis

Technical impact

The @angular/service-worker package fails to preserve client‑defined request options when it reconstructs a Request object for intercepted assets. Credentials settings such as credentials: 'omit' and cache options like cache: 'no-store' are reset to the browser defaults (credentials: 'same-origin' and the browser default cache). As a result, sensitive headers or cookies may be sent unintentionally and private page data may be cached by the service worker, allowing session secrets to leak or private content to remain cached after logout.

Affected Systems

Angular, specifically the @angular/service-worker package, is affected in all releases older than 22.0.0‑rc.2, 21.2.15, 20.3.22, and 19.2.23. Users running these earlier versions on websites that register a service worker are vulnerable. The issue is fixed in the quoted releases.

Risk and Exploitability

The vulnerability carries a CVSS score of 5.7, indicating a moderate risk. EPSS information is not available, and the vulnerability is not listed in the CISA KEV catalog. The attack vector likely requires the user to access a web application that registers a service worker and invokes affected assets; an attacker could observe leaked credentials or cached private data during that interaction.

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 the @angular/service-worker package to 22.0.0-rc.2 or newer, 21.2.15 or newer, 20.3.22 or newer, or 19.2.23 or newer, as these releases contain the fix for the request enforcement issue.
If upgrading is not immediately possible, remove or disable the service worker from the application to prevent the request reconstruction from occurring, thereby avoiding the credential and cache policy stripping.
After applying the upgrade or disabling the service worker, verify that request options (credentials and cache) are preserved by inspecting network requests in the browser developer tools to ensure no default values are being applied.

Generated by OpenCVE AI on June 22, 2026 at 18:51 UTC.

Tracking

Advisories

Source	ID	Title
Github GHSA	GHSA-95qp-cmmw-mgqv	@angular/service-worker: Request Credential & Cache Policy Stripping

Metrics

Attack Vector Local

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

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 Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.208% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/angular/angular/pull/68904
https://github.com/angular/angular/security/advisories/GHSA-95qp-cmmw-mgqv
https://nvd.nist.gov/vuln/detail/CVE-2026-50184
https://www.cve.org/CVERecord?id=CVE-2026-50184

History

Jul 8, 2026 12:15 PM Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2026-50184 https://www.cve.org/CVERecord?id=CVE-2026-50184
Metrics	threat_severity `None`	cvssV3_1 `{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}` threat_severity `Moderate`

Jun 23, 2026 3:30 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 8:15 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 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/service-worker package compromises the integrity of request-policy enforcement during request reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it reconstructs a new Request object using an internal helper function. During this reconstruction process, the helper function strips explicit client-defined safety parameters: the credentials configuration (such as credentials: 'omit') and the HTTP cache mode configuration (such as cache: 'no-store'). These are reverted back to standard browser-default parameters (credentials: 'same-origin' and default HTTP cache properties). This causes the browser to include active credentials (such as cookies or Authorization headers) on outbound requests where the client-side developer explicitly instructed they should be omitted, leading to potential session leaks. Additionally, it causes private or non-cacheable resources to be cached by the service worker's engine, making private page states accessible or persistent inside the client's local cache post-logout. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.
Title		Angular: Request Credential & Cache Policy Stripping in Angular Service Worker
Weaknesses		CWE-200 CWE-524
References		https://github.com/angular/angular/pull/68904 https://github.com/angular/angular/security/advisories/GHSA-95qp-cmmw-mgqv
Metrics		cvssV4_0 `{'score': 5.7, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}`