8.7

CVE-2025-62427: angular angular-cli Server-Side Request Forgery (SSRF)

CVSS: 8.7v4.0HighDeferred
AliasesGHSA-q63q-pgmf-mxhr
Published 16-10-2025Last modified 17-10-2025
Open JSON

Vulnerability summary

CVE-2025-62427 is a high (CVSS 8.7) Server-Side Request Forgery (SSRF) vulnerability in angular angular-cli. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.9% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.7/10
010
High · v4.0 (CVE.org)
EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-10-2025
    PublishedVulnerability first disclosed.
  2. 17-10-2025
    Last modifiedVulnerability information updated.

Description

The Angular SSR is a server-rise rendering tool for Angular applications. The vulnerability is a Server-Side Request Forgery (SSRF) flaw within the URL resolution mechanism of Angular's Server-Side Rendering package (@angular/ssr) before 19.2.18, 20.3.6, and 21.0.0-next.8. The function createRequestUrl uses the native URL constructor. When an incoming request path (e.g., originalUrl or url) begins with a double forward slash (//) or backslash (\\), the URL constructor treats it as a schema-relative URL. This behavior overrides the security-intended base URL (protocol, host, and port) supplied as the second argument, instead resolving the URL against the scheme of the base URL but adopting the attacker-controlled hostname. This allows an attacker to specify an external domain in the URL path, tricking the Angular SSR environment into setting the page's virtual location (accessible via DOCUMENT or PlatformLocation tokens) to this attacker-controlled domain. Any subsequent relative HTTP requests made during the SSR process (e.g., using HttpClient.get('assets/data.json')) will be incorrectly resolved against the attacker's domain, forcing the server to communicate with an arbitrary external endpoint. This vulnerability is fixed in 19.2.18, 20.3.6, and 21.0.0-next.8.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

0.00 pp

From 0.43% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.43%

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

@angular1 product
  • ssr≥ 19.0.0-next.0, < 19.2.18 | ≥ 20.0.0-next.0, < 20.3.6 | ≥ 21.0.0-next.0, < 21.0.0-next.8
Angular1 product
  • angular-cli≥ 19.0.0-next.0, < 19.2.18 | ≥ 20.0.0-next.0, < 20.3.6 | ≥ 21.0.0-next.0, < 21.0.0-next.8

2 vendors · 2 products

References

4 links