CVE-2026-44437
Description
The Angular SSR is a server-rise rendering tool for Angular applications. From 19.0.0-next.0 to before 19.2.25, 20.3.25, 21.2.9, and 22.0.0-next.7, a vulnerability exists in the X-Forwarded-Prefix header processing logic within Angular SSR. The internal validation mechanism fails to properly account for URL-encoded characters, specifically dots (%2e%2e). This allows an attacker to bypass security filters by injecting encoded path traversal sequences that are later decoded and utilized by the application logic. When an Angular SSR application is configured to trust proxy headers and is deployed behind a proxy that forwards the X-Forwarded-Prefix header without prior sanitization, an attacker can provide a payload such as /%2e%2e/evil. This vulnerability is fixed in19.2.25, 20.3.25, 21.2.9, and 22.0.0-next.7.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@angular/ssrnpm | >= 22.0.0-next.0, < 22.0.0-next.7 | 22.0.0-next.7 |
@angular/ssrnpm | >= 21.0.0-next.0, < 21.2.9 | 21.2.9 |
@angular/ssrnpm | >= 20.0.0-next.0, < 20.3.25 | 20.3.25 |
@angular/ssrnpm | >= 19.0.0-next.0, < 19.2.25 | 19.2.25 |
Affected products
10>= 19.0.0-next.0, < 19.2.25+ 8 more
- (no CPE)range: >= 19.0.0-next.0, < 19.2.25
- cpe:2.3:a:angular:angular_cli:22.0.0:next0:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:22.0.0:next1:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:22.0.0:next2:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:22.0.0:next3:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:22.0.0:next4:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:22.0.0:next5:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:22.0.0:next6:*:*:*:node.js:*:*
- cpe:2.3:a:angular:angular_cli:*:*:*:*:*:node.js:*:*range: >=19.0.0,<19.2.25
Patches
Vulnerability mechanics
References
5- github.com/angular/angular-cli/pull/33031nvdPatchWEB
- github.com/advisories/GHSA-69xr-m8h6-h664ghsaADVISORY
- github.com/angular/angular-cli/security/advisories/GHSA-69xr-m8h6-h664nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-44437ghsaADVISORY
- angular.dev/best-practices/securityghsaWEB
News mentions
0No linked articles in our index yet.