How severe is CVE-2026-8769?

CVE-2026-8769 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-8769 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8769?

CVE-2026-8769 affects Vercel Ai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8769?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8769 have an EU (EUVD) identifier?

Yes. CVE-2026-8769 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30712.

When was CVE-2026-8769 published?

CVE-2026-8769 was published on 2026-05-17 and last updated on 2026-06-17.

CVE-2026-8769

CVE-2026-8769 is a medium-severity vulnerability in Vercel Ai with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
CVSS v4: 2.1
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30712
Weakness: CWE-400
Affected product: Vercel Ai
Published: 2026-05-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-8769?: 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.
How severe is CVE-2026-8769?: CVE-2026-8769 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-8769 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8769?: CVE-2026-8769 affects Vercel Ai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8769?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8769 have an EU (EUVD) identifier?: Yes. CVE-2026-8769 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30712.
When was CVE-2026-8769 published?: CVE-2026-8769 was published on 2026-05-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vercel:ai:*:*:*:*:*:*:*:*

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