CVE-2026-8769mediumCWE-400CWE-404

CVE-2026-8769: medium-severity vulnerability in vercel ai

vercel ai provider-utils response-handler.ts createJsonErrorResponseHandler resource consumption

Published · Updated

Follow this CVE+ Monitor ai+ Monitor @ai-sdk/provider-utils

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 5.3epss 0.6%
A vulnerability was determined in vercel ai up to 3.0.97. The impacted element is the function createJsonResponseHandler/createJsonErrorResponseHandler of the file packages/provider-utils/src/response-handler.ts of the component provider-utils. This manipulation causes resource consumption. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
vercel · ai
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — vercel ai

In the same product, most dangerous first.

CVE-2026-8767LOWvercel ai PR Branch Name Interpolation prettier-on-automerge.yml run os command injectionEPSS 7.0%CVE-2026-8768MEDIUMvercel ai provider-utils download-blob.ts validateDownloadUrl server-side request forgeryEPSS 0.5%