NVD / CVE Program· CNA GitHub_M

CVE-2026-111752: Angular: Denial of Service via Unmatched Empty-Path Outlet Route Matching in Server-Side Rendering (SSR)

HighCVSS 8.2 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 32/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.98% (FIRST EPSS); higher than 62.9% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: @angular/router (npm) 20.3.33, 21.2.25, 22.2.1.

Low priority for now. Upgrade to @angular/router (npm) 20.3.33, 21.2.25, 22.2.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.33, 21.2.25, and 22.2.1, @angular/router in Node.js server-side rendering fails to require auxiliary outlet URL segments to match routes configured for their outlet names. Crafted requests containing multiple unconfigured empty-path outlet groups can repeatedly evaluate the route configuration, construct duplicate ActivatedRouteSnapshot trees, execute canMatch guards and resolvers, and copy route parameters and queryParams for each outlet. An unauthenticated remote attacker can exhaust the Node.js heap or CPU and terminate an SSR worker when SSR is enabled, a route level contains an empty-path route or named outlet, upstream infrastructure forwards the request target, and the worker has a constrained heap. The allocation is transient rather than a persistent leak, and client-side SPAs and build-time prerendering are not affected. This issue is fixed in versions 20.3.33, 21.2.25, and 22.2.1.

Published: Nov 3, 2026
Updated: Nov 12, 2026
EPSS: 0.9% · 62th percentile
CWE: CWE-400

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 32 / 40 · 8.2 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.9%

CISA SSVC decision

Exploitation: proof of concept
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 8.2; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

angular angular
- <= 19.2.25, >= 20.0.0, < 20.3.33, >= 21.0.0, < 21.2.25, >= 22.0.0, < 22.2.1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
npm	@angular/router	from 20.0.0 · before 20.3.33	20.3.33
npm	@angular/router	from 21.0.0 · before 21.2.25	21.2.25
npm	@angular/router	from 22.0.0 · before 22.2.1	22.2.1
npm	@angular/router	up to and including 19.2.25	—

Same product

angular: all records

Other highest-scoring records for the same primary product.

CVE-2026-68945Angular: Cache-Key Ambiguity in HttpTransferCache Leading to Cross-Request Response Reuse and State Poisoning
35Monitor
CVE-2026-50168Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass
35Monitor
CVE-2026-46417Angular: SSRF via Hostname Hijacking in @angular/platform-server
35Monitor

Published before and after this one in the same product

← EarlierCVE-2026-101897Oct 14, 2026 · Angular DevTools (Local DoS)
20Monitor
← EarlierCVE-2026-111751Nov 3, 2026 · Angular: Denial of Service via RouterLink Query Parameter Retention in Server-Side Rendering (SSR)
32Monitor
Later →CVE-2026-111754Nov 3, 2026 · Angular: Open Redirect via Protocol-Relative URLs in Server-Side Rendering (SSR)
20Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
npm:@angular/router	20.3.33	Package registry (OSV)
npm:@angular/router	21.2.25	Package registry (OSV)
npm:@angular/router	22.2.1	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedNov 3, 2026
Fix recordedNov 4, 2026same day
TodayNov 13, 2026+10 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-10189520 days apartAngular SSR: Denial of Service (DoS) via Infinite Loop on Malformed DOCTYPE
34Monitor
CVE-2026-1117510 days apartAngular: Denial of Service via RouterLink Query Parameter Retention in Server-Side Rendering (SSR)
32Monitor
CVE-2026-10189620 days apartAngular: Denial of Service via Numeric URL Matrix Parameters in Server-Side Rendering (SSR)
32Monitor
CVE-2026-50171134 days apartAngular: Denial of Service (DoS) via OOM in Number Formatting (digitsInfo)
32Monitor
CVE-2026-54268134 days apartAngular: Denial of Service (DoS) via OOM in Date Formatting (formatDate)
32Monitor

Not on record for this CVE: researcher credit · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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

nvd-secondary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Endpoint Denial of ServiceT1499

Change log

SSVC exploitation— → pocNov 9, 2026, 5:07 PM UTC
Fix✗ → ✓Nov 4, 2026, 3:36 AM UTC
Exploit maturity— → noneNov 3, 2026, 10:07 PM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/angular/angular/commit/a83f8119acd466b524ae0113096ed188358d6d6c

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records