Vulnerability-Lookup

CVE-2026-54268 (GCVE-0-2026-54268)

Vulnerability from cvelistv5 – Published: 2026-06-22 15:31 – Updated: 2026-06-22 15:31

Title

Angular: Denial of Service (DoS) via OOM in Date Formatting (formatDate)

Summary

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.1, 21.2.17, and 20.3.25, a Denial of Service (DoS) vulnerability exists in the @angular/common package of the Angular framework. The formatDate function, which is also utilized by the standard Angular DatePipe, does not properly limit or validate the length of the format parameter. When parsing a maliciously crafted, excessively long date format string (e.g., a repeating pattern or very large string), the internal parser splits the string iteratively using a regular expression loop. This results in uncontrolled resource consumption (high CPU utilization and excessive memory allocations), leading to a Denial of Service (DoS). This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.

Severity

8.2 (High)


                        
                          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

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/angular/angular/security/advis…	x_refsource_CONFIRM
https://github.com/angular/angular/pull/69197	x_refsource_MISC
https://github.com/angular/angular/commit/eeb03f4…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
angular	angular	Affected: >= 22.0.0-next.0 < 22.0.1 Affected: >= 21.0.0-next.0 < 21.2.17 Affected: >= 20.0.0-next.0 < 20.3.25 Affected: <= 19.2.25

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "angular",
          "vendor": "angular",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 22.0.0-next.0 \u003c 22.0.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 21.0.0-next.0 \u003c 21.2.17"
            },
            {
              "status": "affected",
              "version": "\u003e= 20.0.0-next.0 \u003c 20.3.25"
            },
            {
              "status": "affected",
              "version": "\u003c= 19.2.25"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.1, 21.2.17, and 20.3.25, a Denial of Service (DoS) vulnerability exists in the @angular/common package of the Angular framework. The formatDate function, which is also utilized by the standard Angular DatePipe, does not properly limit or validate the length of the format parameter. When parsing a maliciously crafted, excessively long date format string (e.g., a repeating pattern or very large string), the internal parser splits the string iteratively using a regular expression loop. This results in uncontrolled resource consumption (high CPU utilization and excessive memory allocations), leading to a Denial of Service (DoS). This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333: Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-22T15:31:47.836Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/angular/angular/security/advisories/GHSA-48r7-hpm6-gfxm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/angular/angular/security/advisories/GHSA-48r7-hpm6-gfxm"
        },
        {
          "name": "https://github.com/angular/angular/pull/69197",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/angular/angular/pull/69197"
        },
        {
          "name": "https://github.com/angular/angular/commit/eeb03f4ea310e2e51ba5d53a421ec7b418e186cd",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/angular/angular/commit/eeb03f4ea310e2e51ba5d53a421ec7b418e186cd"
        }
      ],
      "source": {
        "advisory": "GHSA-48r7-hpm6-gfxm",
        "discovery": "UNKNOWN"
      },
      "title": "Angular: Denial of Service (DoS) via OOM in Date Formatting (formatDate)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54268",
    "datePublished": "2026-06-22T15:31:47.836Z",
    "dateReserved": "2026-06-12T17:13:32.279Z",
    "dateUpdated": "2026-06-22T15:31:47.836Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-54268",
      "date": "2026-06-14",
      "epss": "0.00048",
      "percentile": "0.15512"
    }
  }
}

GHSA-48R7-HPM6-GFXM

Vulnerability from github – Published: 2026-06-15 17:24 – Updated: 2026-06-15 17:24

Summary

@angular/common: Denial of Service (DoS) via OOM in Date Formatting (formatDate)

Details

A Denial of Service (DoS) vulnerability exists in the @angular/common package of the Angular framework. The formatDate function, which is also utilized by the standard Angular DatePipe, does not properly limit or validate the length of the format parameter.

When parsing a maliciously crafted, excessively long date format string (e.g., a repeating pattern or very large string), the internal parser splits the string iteratively using a regular expression loop. This results in uncontrolled resource consumption (high CPU utilization and excessive memory allocations), leading to a Denial of Service (DoS).

Impact

1. Server-Side Rendering (SSR)

In Angular applications that leverage Server-Side Rendering, an attacker can supply a malicious payload with an excessively long date format string. Processing this on the server causes high CPU usage and triggers a JavaScript heap out of memory crash, rendering the application unavailable to all users.

2. Client-Side Rendering (CSR)

In standard client-side applications, executing the vulnerable function with an excessively long format string blocks the browser's main thread, causing the browser tab to freeze and become completely unresponsive.

Patched Versions

22.0.1
21.2.17
20.3.25

Attack Preconditions

For this vulnerability to be exploitable, both of the following conditions must be met: 1. Vulnerable Component Usage: The application must format dates using the formatDate utility or the DatePipe. 2. Attacker-Controlled Parameter: The date format string passed to these utilities must be customizable or directly controlled by untrusted user input (e.g., parsed from query parameters, user preferences, or API responses).

If the date format is hardcoded (e.g., 'mediumDate', 'shortTime', or static strings) or properly validated to be within a reasonable length limit, the application is not vulnerable.

Severity

8.2 (High)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@angular/common"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "22.0.0-next.0"
            },
            {
              "fixed": "22.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@angular/common"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "21.0.0-next.0"
            },
            {
              "fixed": "21.2.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@angular/common"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "20.0.0-next.0"
            },
            {
              "fixed": "20.3.25"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@angular/common"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "19.2.25"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54268"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-15T17:24:52Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "A Denial of Service (DoS) vulnerability exists in the `@angular/common` package of the Angular framework. The `formatDate` function, which is also utilized by the standard Angular `DatePipe`, does not properly limit or validate the length of the `format` parameter. \n\nWhen parsing a maliciously crafted, excessively long date format string (e.g., a repeating pattern or very large string), the internal parser splits the string iteratively using a regular expression loop. This results in uncontrolled resource consumption (high CPU utilization and excessive memory allocations), leading to a Denial of Service (DoS).\n\n\n### Impact\n\n#### 1. Server-Side Rendering (SSR)\nIn Angular applications that leverage Server-Side Rendering, an attacker can supply a malicious payload with an excessively long date format string. Processing this on the server causes high CPU usage and triggers a `JavaScript heap out of memory` crash, rendering the application unavailable to all users.\n\n#### 2. Client-Side Rendering (CSR)\nIn standard client-side applications, executing the vulnerable function with an excessively long format string blocks the browser\u0027s main thread, causing the browser tab to freeze and become completely unresponsive.\n\n### Patched Versions\n* 22.0.1  \n* 21.2.17  \n* 20.3.25\n\n### Attack Preconditions\nFor this vulnerability to be exploitable, both of the following conditions must be met:\n1. **Vulnerable Component Usage:** The application must format dates using the `formatDate` utility or the `DatePipe`.\n2. **Attacker-Controlled Parameter:** The date format string passed to these utilities must be customizable or directly controlled by untrusted user input (e.g., parsed from query parameters, user preferences, or API responses).\n\n*If the date format is hardcoded (e.g., `\u0027mediumDate\u0027`, `\u0027shortTime\u0027`, or static strings) or properly validated to be within a reasonable length limit, the application is not vulnerable.*",
  "id": "GHSA-48r7-hpm6-gfxm",
  "modified": "2026-06-15T17:24:52Z",
  "published": "2026-06-15T17:24:52Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/angular/angular/security/advisories/GHSA-48r7-hpm6-gfxm"
    },
    {
      "type": "WEB",
      "url": "https://github.com/angular/angular/pull/69197"
    },
    {
      "type": "WEB",
      "url": "https://github.com/angular/angular/commit/eeb03f4ea310e2e51ba5d53a421ec7b418e186cd"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/angular/angular"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@angular/common: Denial of Service (DoS) via OOM in Date Formatting (formatDate)"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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