XSS in @Angular Compiler
CVE-2026-69151
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (9.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- @Angular Compiler — versions >= 22.0.0-next.0, < 22.0.1, >= 21.0.0-next.0, < 21.2.19, < 20.3.27
- @Angular Core — versions >= 22.0.0-next.0, < 22.0.1, >= 21.0.0-next.0, < 21.2.19, < 20.3.27
- Angular — versions >= 22.0.0-next.0, < 22.0.1, >= 21.0.0-next.0, < 21.2.19, < 20.3.27
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-69151?
- CVE-2026-69151 is a medium-severity vulnerability in @Angular Compiler, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.
- How severe is CVE-2026-69151?
- Medium severity. CVSS v3 base score is 6.1 out of 10.