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.…
Exact source revision recorded 27 Oct 2026 11:12:09 UTC. It does not establish the source's current position. Latest evidence.
nvd · CVE-2026-44437
PublishedThe 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.
NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Analyzed
Weakness classifications: CWE-22 · CWE-601
Original publisher date fields
published: 2026-05-13T22:16:44.710
lastModified: 2026-10-26T14:10:00.130
8 source CPE criteria · context only
- cpe:2.3:a:angular:angular_cli:*:*:*:*:*:node.js:*:*
- 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:*:*
The original JSON retains the logical configuration operators, exclusions and version bounds.
- Source published
- 13 May 2026 22:16:44 UTC
- Source modified
- 26 Oct 2026 14:10:00 UTC
- Observed here
- 27 Oct 2026 11:12:09 UTC
- Source terms
- NIST NVD usage terms; underlying source attribution retained
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 4.0 · [email protected] · Secondary · 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 · [email protected] · Primary · 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N