THREATPORT/VULNERABILITY/CVE-2026-8767
MEDIUM SEVERITY

CVE-2026-8767

Ai vulnerability

CVSS
5.0
EPSS
4.3%
EPSS pct
90th
Exploited
No known
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.
Affected vendor
Vercel
Affected product
Ai
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness type (CWE)
Published
2026-05-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity, low impact to availability.

Its EPSS score of 4.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2026-8767

  • Confirm whether Vercel Ai is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-8767.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-8767

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