8.5

CVE-2025-66412: angular Cross-site Scripting

CVSS: 8.5v4.0HighModified
AliasesUBUNTU-CVE-2025-66412DEBIAN-CVE-2025-66412CGA-2q29-54r6-657j
Published 01-12-2025Last modified 02-06-2026
Open JSON

Vulnerability summary

CVE-2025-66412 is a high (CVSS 8.5) Cross-site Scripting vulnerability in angular. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.5/10
010
High · v4.0 (CVE.org)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
RHSA-2026:33371CGA-4H9F-XGR7-VQ6P

Timeline

  1. 01-12-2025
    PublishedVulnerability first disclosed.
  2. 02-06-2026
    Last modifiedVulnerability information updated.

Description

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 21.0.2, 20.3.15, and 19.2.17, A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Angular Template Compiler. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain javascript: URLs) as requiring strict URL security, enabling the injection of malicious scripts. This vulnerability is fixed in 21.0.2, 20.3.15, and 19.2.17.

CVSS metrics

9 scores · 7 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

0.00 pp

From 0.41% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard10 products
  • katib-earlystopping< 0.19.0-r31
  • katib-suggestion-goptuna-compatAll versions (No fix recorded)
  • katib-suggestion-hyperband< 0.19.0-r31
  • katib-suggestion-hyperopt< 0.19.0-r31 | < 0.19.0-r40
  • katib-suggestion-nas-darts< 0.19.0-r31
Wolfi10 products
  • katib-earlystopping< 0.19.0-r31
  • katib-suggestion-goptuna-compatAll versions (No fix recorded)
  • katib-suggestion-hyperband< 0.19.0-r31
  • katib-suggestion-hyperopt< 0.19.0-r31 | < 0.19.0-r40
  • katib-suggestion-nas-darts< 0.19.0-r31
@angular1 product
  • compiler≥ 21.0.0-next.0, < 21.0.2 | ≥ 20.0.0-next.0, < 20.3.15 | ≥ 19.0.0-next.0, < 19.2.17 | ≤ 18.2.14
Angular1 product
  • angular≥ 21.0.0-next.0 < 21.0.2 (No fix recorded) | ≥ 20.0.0-next.0 < 20.3.15 (No fix recorded) | ≥ 19.0.0-next.0 < 19.2.17 (No fix recorded) | ≤ 18.2.14 | ≥ 19.0.0, < 19.2.17 | ≥ 20.0.0, < 20.3.15 | ≥ 21.0.0, < 21.0.2
Debian1 product
  • angular.jsAll versions (No fix recorded)
Ubuntu1 product
  • angular.jsAll versions (No fix recorded)

6 vendors · 24 products

References

10 links