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 22.0.1, the Angular compiler i18n pipeline permits i18n-onerror and other i18n-on event-handler attributes, allowing a lower-trust translation file to replace a static handler with executable JavaScript. This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.1.
https://github.com/angular/angular/security/advisories/GHSA-jj27-h5hq-8x99
https://github.com/angular/angular/pull/69306
https://github.com/angular/angular/pull/68821
https://github.com/angular/angular/commit/6c41f5ca01c0ae045fc7d929b72853a11eb55865
https://github.com/angular/angular/commit/417a4071a776464d549509ed3aec121dbd2fda5e
Published: 2026-08-03
Updated: 2026-08-03
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
Base Score: 7.6
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High