How severe is CVE-2026-8767?

CVE-2026-8767 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-8767 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8767?

CVE-2026-8767 affects Vercel Ai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8767?

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

Does CVE-2026-8767 have an EU (EUVD) identifier?

Yes. CVE-2026-8767 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30714.

When was CVE-2026-8767 published?

CVE-2026-8767 was published on 2026-05-17 and last updated on 2026-06-17.

CVE-2026-8767

CVE-2026-8767 is a medium-severity vulnerability in Vercel Ai with a CVSS 3.x base score of 5.0. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v2: 4.6
CVSS v4: 1.3
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30714
Weakness: CWE-77
Affected product: Vercel Ai
Published: 2026-05-17
Last modified: 2026-06-17

Description

A vulnerability has been found in vercel ai up to 3.0.97. Impacted is the function run of the file .github/workflows/prettier-on-automerge.yml of the component PR Branch Name Interpolation. The manipulation leads to os command injection. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-8767?: A vulnerability has been found in vercel ai up to 3.0.97. Impacted is the function run of the file .github/workflows/prettier-on-automerge.yml of the component PR Branch Name Interpolation. The manipulation leads to os command injection. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-8767?: CVE-2026-8767 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-8767 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8767?: CVE-2026-8767 affects Vercel Ai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8767?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8767 have an EU (EUVD) identifier?: Yes. CVE-2026-8767 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30714.
When was CVE-2026-8767 published?: CVE-2026-8767 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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