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GHSA-2XP9-VWFH-VXW4

Vulnerability from github – Published: 2026-09-08 21:21 – Updated: 2026-09-08 21:21
VLAI
Summary
Next.js: Unauthenticated Remote Code Execution in Image Optimization API when AVIF files are used
Details

A vulnerability in the underlying libheif library used by sharp which Next.js uses for image optimization can lead to remote code execution when AVIF files are optimized.

Until a fix has propagated, optimization of AVIF files is disabled.

Severity
9.5 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "next"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.0.0"
            },
            {
              "fixed": "15.5.24"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "next"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "16.0.0"
            },
            {
              "fixed": "16.3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-1395"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-08T21:21:12Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "A vulnerability in the underlying `libheif` library used by `sharp` which Next.js uses for image optimization can lead to remote code execution when AVIF files are optimized.\n\nUntil a fix has propagated, optimization of AVIF files is disabled.",
  "id": "GHSA-2xp9-vwfh-vxw4",
  "modified": "2026-09-08T21:21:12Z",
  "published": "2026-09-08T21:21:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-g89c-p67h-r497"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/security/advisories/GHSA-2xp9-vwfh-vxw4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/pull/97875"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/pull/97931"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/commit/3a15b4ac6ac8e70b1a9b18ecc18e8434462899b3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/commit/409772ec807def20132d251ad48fd8d8ad4c73c2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/commit/7a5937a8ab20b89d0a961f75eabb11577f5d5998"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vercel/next.js"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/releases/tag/v15.5.24"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vercel/next.js/releases/tag/v16.3.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Next.js: Unauthenticated Remote Code Execution in Image Optimization API when AVIF files are used"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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