Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.27, 21.2.19, and 22.0.2, HttpTransferCache comma-joins repeated request parameters, allowing semantically distinct HttpClient requests to use the same transfer-cache key and reuse a wrong backend response. This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.2.
https://github.com/angular/angular/security/advisories/GHSA-jhpw-976m-542j
https://github.com/angular/angular/pull/68571
https://github.com/angular/angular/commit/a6c7fc5c13e6e494a4c9bd8e773b8d4b2a99b20c
https://github.com/angular/angular/commit/a64e2883e9dc4abdac70209129be303de79e5b2b
https://github.com/angular/angular/commit/948a8d6831e8920b54663ec79421da95210e0e35
https://github.com/angular/angular/commit/6867f77ec779a0a24f6339ad6c775f444202103c
Published: 2026-08-03
Updated: 2026-08-03
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High
Base 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
Severity: High