---
id: CVE-2026-8769
aliases:
  - GHSA-866g-f22w-33x8
title: '@ai-sdk/provider-utils has an Uncontrolled Resource Consumption issue'
summary: '@ai-sdk/provider-utils has an Uncontrolled Resource Consumption issue'
severity: low
cvss: 4.3
cwe:
  - CWE-400
vendor: ai-sdk
product: '@ai-sdk/provider-utils'
ecosystem: npm
affected:
  - '@ai-sdk/provider-utils < 3.0.28'
  - '@ai-sdk/provider-utils >= 4.0.0-beta.10, < 4.0.33'
  - '@ai-sdk/provider-utils >= 5.0.0-beta.0, < 5.0.1'
patched:
  - '@ai-sdk/provider-utils 3.0.28'
  - '@ai-sdk/provider-utils 4.0.33'
  - '@ai-sdk/provider-utils 5.0.1'
published: '2026-05-18'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T16:16:51Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-866g-f22w-33x8'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8769'
  - url: 'https://gist.github.com/YLChen-007/fb1096bc8428bed9a428f764d9d103bb'
  - url: 'https://vuldb.com/submit/811406'
  - url: 'https://vuldb.com/vuln/364394'
  - url: 'https://vuldb.com/vuln/364394/cti'
  - url: 'https://github.com/vercel/ai/pull/16374'
  - url: >-
      https://github.com/vercel/ai/commit/6a436e31d247d678ddaedfc6f61e73ac0595e4b4
  - url: >-
      https://github.com/vercel/ai/commit/b30e43ac3fae2432a40b4f4f27f844f3d78b119e
  - url: >-
      https://github.com/vercel/ai/commit/b85c4fbc603b8173cf50a9790823397aada908a9
  - url: >-
      https://github.com/vercel/ai/blob/main/packages/provider-utils/CHANGELOG.md#501
  - url: 'https://github.com/vercel/ai/releases/tag/@ai-sdk/provider-utils@3.0.28'
  - url: 'https://github.com/vercel/ai/releases/tag/@ai-sdk/provider-utils@4.0.33'
  - url: 'https://github.com/vercel/ai/releases/tag/@ai-sdk/provider-utils@5.0.1'
  - url: 'https://github.com/advisories/GHSA-866g-f22w-33x8'
tags:
  - ghsa
  - npm
epss: 0.00561
epssPercentile: 0.45444
ingestedAt: '2026-09-08T16:34:19.230Z'
---

## Overview

Versions of `@ai-sdk/provider-utils` before 3.0.28, from 4.0.0 before 4.0.33, and from 5.0.0 before 5.0.1 are vulnerable to uncontrolled resource consumption. The `createJsonResponseHandler`, `createJsonErrorResponseHandler`, and `createStatusCodeErrorResponseHandler` functions in `packages/provider-utils/src/response-handler.ts` read response bodies without a shared size limit, allowing a remote attacker with low privileges to cause excessive memory consumption. The exploit has been publicly disclosed and may be utilized.

## Affected packages

- `@ai-sdk/provider-utils < 3.0.28`
- `@ai-sdk/provider-utils >= 4.0.0-beta.10, < 4.0.33`
- `@ai-sdk/provider-utils >= 5.0.0-beta.0, < 5.0.1`

## Remediation

Upgrade to a patched release:

- `@ai-sdk/provider-utils 3.0.28`
- `@ai-sdk/provider-utils 4.0.33`
- `@ai-sdk/provider-utils 5.0.1`