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CVE-2026-54264

28
FAUCET Score

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.1, 21.2.17, and 20.3.25, an information disclosure vulnerability exists in the @angular/service-worker package of the Angular framework. When the Service Worker fetches assets, it preserves metadata (such as headers) from the original request. However, on cross-origin redirects, the Service Worker fails to strip sensitive headers, violating the Fetch redirect algorithm. This allows a remote attacker to obtain sensitive credentials (e.g., Authorization tokens, Proxy-Authorization credentials, or session cookies) by triggering a cross-origin redirect to an untrusted external origin. This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.

First published: Jun 22, 2026Last modified: Jun 22, 2026

Impacted Technologies

VendorProductVersion(s)CPE
<= 19.2.25CPE matchmatch criteria
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*
>= 20.0.0, < 20.3.25CPE matchmatch criteria
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*
>= 21.0.0, < 21.2.17CPE matchmatch criteria
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*
>= 22.0.0, < 22.0.1CPE matchmatch criteria
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

8.3HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
HIGH
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
14.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 15th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

npmpatch availablevia ghsa
Product: @angular/service-workerFixed in: 22.0.1
npmpatch availablevia ghsa
Product: @angular/service-workerFixed in: 21.2.17
npmpatch availablevia ghsa
Product: @angular/service-workerFixed in: 20.3.25

Vendor Advisories (1)

npmGHSA-qxh6-94w6-9r5phigh

@angular/service-worker: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker

Jun 15, 2026

References

github.com / angular/angular/commit/47d68dcb26266316647133ab6385e77fc3e5ae08
Patch
github.com / angular/angular/pull/69029
Issue TrackingPatch
github.com / angular/angular/security/advisories/GHSA-qxh6-94w6-9r5p
Third Party Advisory