Product

Next.js

Description

The React Framework for the Web

Product name

next.js

CVE-2026-44577 (GCVE-0-2026-44577)

Vulnerability from – Published: 2026-05-13 17:00 – Updated: 2026-06-30 02:46
VLAI
Title
Next.js: Denial of Service in the Image Optimization API
Summary
Next.js is a React framework for building full-stack web applications. From 10.0.0 to before 15.5.16 and 16.2.5, when self-hosting Next.js with the default image loader, the Image Optimization API fetches local images entirely into memory without enforcing a maximum size limit. An attacker could cause out-of-memory conditions by requesting large local assets from the /_next/image endpoint that match the images.localPatterns configuration (by default, all patterns are allowed). This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44577 (GCVE-0-2026-44577)

Vulnerability from – Published: 2026-05-13 17:00 – Updated: 2026-06-30 02:46
VLAI
Title
Next.js: Denial of Service in the Image Optimization API
Summary
Next.js is a React framework for building full-stack web applications. From 10.0.0 to before 15.5.16 and 16.2.5, when self-hosting Next.js with the default image loader, the Image Optimization API fetches local images entirely into memory without enforcing a maximum size limit. An attacker could cause out-of-memory conditions by requesting large local assets from the /_next/image endpoint that match the images.localPatterns configuration (by default, all patterns are allowed). This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
Impacted products
Show details on NVD website

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CVE-2026-45109 (GCVE-0-2026-45109)

Vulnerability from – Published: 2026-05-13 17:11 – Updated: 2026-06-30 02:46
VLAI
Title
Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
Summary
Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
  • CWE-358 - Improperly Implemented Security Check for Standard
Assigner
Impacted products
Show details on NVD website

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CVE-2026-45109 (GCVE-0-2026-45109)

Vulnerability from – Published: 2026-05-13 17:11 – Updated: 2026-06-30 02:46
VLAI
Title
Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
Summary
Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
  • CWE-358 - Improperly Implemented Security Check for Standard
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44578 (GCVE-0-2026-44578)

Vulnerability from – Published: 2026-05-13 17:01 – Updated: 2026-06-30 02:46
VLAI
Title
Next.js: Server-side request forgery in applications using WebSocket upgrades
Summary
Next.js is a React framework for building full-stack web applications. From 13.4.13 to before 15.5.16 and 16.2.5, self-hosted applications using the built-in Node.js server can be vulnerable to server-side request forgery through crafted WebSocket upgrade requests. An attacker can cause the server to proxy requests to arbitrary internal or external destinations, which may expose internal services or cloud metadata endpoints. Vercel-hosted deployments are not affected. This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44578 (GCVE-0-2026-44578)

Vulnerability from – Published: 2026-05-13 17:01 – Updated: 2026-06-30 02:46
VLAI
Title
Next.js: Server-side request forgery in applications using WebSocket upgrades
Summary
Next.js is a React framework for building full-stack web applications. From 13.4.13 to before 15.5.16 and 16.2.5, self-hosted applications using the built-in Node.js server can be vulnerable to server-side request forgery through crafted WebSocket upgrade requests. An attacker can cause the server to proxy requests to arbitrary internal or external destinations, which may expose internal services or cloud metadata endpoints. Vercel-hosted deployments are not affected. This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44579 (GCVE-0-2026-44579)

Vulnerability from – Published: 2026-05-13 17:04 – Updated: 2026-06-30 02:44
VLAI
Title
Next.js: Denial of Service via connection exhaustion in applications using Cache Components
Summary
Next.js is a React framework for building full-stack web applications. From to before 15.5.16 and 16.2.5, applications using Partial Prerendering through the Cache Components feature can be vulnerable to connection exhaustion through crafted POST requests to a server action. In affected configurations, a malicious request can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity until legitimate users are denied service. This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
  • CWE-833 - Deadlock
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44579 (GCVE-0-2026-44579)

Vulnerability from – Published: 2026-05-13 17:04 – Updated: 2026-06-30 02:44
VLAI
Title
Next.js: Denial of Service via connection exhaustion in applications using Cache Components
Summary
Next.js is a React framework for building full-stack web applications. From to before 15.5.16 and 16.2.5, applications using Partial Prerendering through the Cache Components feature can be vulnerable to connection exhaustion through crafted POST requests to a server action. In affected configurations, a malicious request can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity until legitimate users are denied service. This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
  • CWE-833 - Deadlock
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44574 (GCVE-0-2026-44574)

Vulnerability from – Published: 2026-05-13 16:56 – Updated: 2026-06-30 02:44
VLAI
Title
Next.js: Middleware / Proxy bypass through dynamic route parameter injection
Summary
Next.js is a React framework for building full-stack web applications. From 15.4.0 to before 15.5.16 and 16.2.5, applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the dynamic route value seen by the page while leaving the visible path unchanged, which can allow protected content to be rendered without passing the expected middleware check. This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
  • CWE-551 - Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
Assigner
Impacted products
Show details on NVD website

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CVE-2026-44574 (GCVE-0-2026-44574)

Vulnerability from – Published: 2026-05-13 16:56 – Updated: 2026-06-30 02:44
VLAI
Title
Next.js: Middleware / Proxy bypass through dynamic route parameter injection
Summary
Next.js is a React framework for building full-stack web applications. From 15.4.0 to before 15.5.16 and 16.2.5, applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the dynamic route value seen by the page while leaving the visible path unchanged, which can allow protected content to be rendered without passing the expected middleware check. This vulnerability is fixed in 15.5.16 and 16.2.5.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
  • CWE-551 - Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
Assigner
Impacted products
Show details on NVD website

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          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44574.json"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-13T18:02:21.088Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-05-13T16:56:06.008Z",
            "value": "Made public."
          }
        ],
        "title": "Next.js: Next.js: Authorization bypass via crafted query parameters",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "next.js",
          "vendor": "vercel",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 15.4.0, \u003c 15.5.16"
            },
            {
              "status": "affected",
              "version": "\u003e= 16.0.0, \u003c 16.2.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Next.js is a React framework for building full-stack web applications. From 15.4.0 to before 15.5.16 and 16.2.5, applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the dynamic route value seen by the page while leaving the visible path unchanged, which can allow protected content to be rendered without passing the expected middleware check. This vulnerability is fixed in 15.5.16 and 16.2.5."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "CWE-288: Authentication Bypass Using an Alternate Path or Channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-13T16:56:06.008Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/vercel/next.js/security/advisories/GHSA-492v-c6pp-mqqv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/vercel/next.js/security/advisories/GHSA-492v-c6pp-mqqv"
        }
      ],
      "source": {
        "advisory": "GHSA-492v-c6pp-mqqv",
        "discovery": "UNKNOWN"
      },
      "title": "Next.js: Middleware / Proxy bypass through dynamic route parameter injection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44574",
    "datePublished": "2026-05-13T16:56:06.008Z",
    "dateReserved": "2026-05-06T21:49:12.424Z",
    "dateUpdated": "2026-06-30T02:44:35.620Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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