Angular: Denial of Service (DoS) via OOM in Number Formatting (digitsInfo)

Description

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23, a Denial of Service (DoS) vulnerability exists in the @angular/common package of Angular. The formatNumber function, which is also utilized by DecimalPipe, PercentPipe, and CurrencyPipe, does not properly validate the upper bounds of the digitsInfo parameter. Specifically, the minimum and maximum fraction digits parsed from the digitsInfo string (e.g., 1.2-4) are converted to integers and used without limits. When parsing a maliciously crafted digitsInfo string with excessively large fraction digit values (e.g., 1.200000000-200000000), the internal roundNumber function attempts to pad the digits array to match the requested fraction size. This results in an unbounded loop that repeatedly pushes elements into an array. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.

Scores

EPSS (exploitation in 30 days)

0.26% · top 83% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.2.

Weakness

• CWE-400: Uncontrolled Resource Consumption (opens in a new tab)All about CWE-400 and its CVEs
• CWE-834: Excessive Iteration (opens in a new tab)All about CWE-834 and its CVEs

Affected products

• angular · angular

  • affected >= 22.0.0-next.0, < 22.0.0-rc.2
  • affected >= 21.0.0-next.0, < 21.2.15
  • affected >= 20.0.0-next.0, < 20.3.22
  • affected >= 19.0.0-next.0, < 19.2.23
  • affected <= 18.2.14

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• npm@angular/commonGHSA-p3vc-36g9-x9gr (opens in a new tab)

References (1)

• https://github.com/angular/angular/security/advisories/GHSA-p3vc-36g9-x9gr (opens in a new tab)x_refsource_CONFIRM

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-p3vc-36g9-x9gr (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-50171](https://trackcve.app/badge/CVE-2026-50171.svg)](https://trackcve.app/cve/CVE-2026-50171)

Record last updated 23 Jun 2026, 16:02 UTC.