# CVE-2026-8767: vercel ai PR Branch Name Interpolation prettier-on-automerge.yml run os command injection

> CVE-2026-8767: vercel ai PR Branch Name Interpolation prettier-on-automerge.yml run os command injection. CVSS 5.0 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-8767
Last updated: 2026-10-14T20:10:00Z

- Published: 2026-05-17 22:30 UTC · Updated: 2026-10-14 20:10 UTC · Assigner: VulDB
- CVSS: 5.0 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
- EPSS: 7.0%, 94th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-77, CWE-78

## 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.

## Affected vendors and products

- vercel: ai

## Tracked companies

- [Vercel](https://rewindex.com/company/vercel.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-8767)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-8767)
- [https://gist.github.com/YLChen-007/870bd6966cd84703d91ce54dfea3bdd0](https://gist.github.com/YLChen-007/870bd6966cd84703d91ce54dfea3bdd0)
- [https://vuldb.com/submit/811402](https://vuldb.com/submit/811402)
- [https://vuldb.com/vuln/364392](https://vuldb.com/vuln/364392)
- [https://vuldb.com/vuln/364392/cti](https://vuldb.com/vuln/364392/cti)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-8767 · Markdown: https://rewindex.com/cve/CVE-2026-8767.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-8767 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:10.961Z