PT-2026-41570 · Vercel · Vercel Ai

Eric-D · Published 2026-05-17 · Updated 2026-05-18 · CVE-2026-8767

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions vercel ai versions prior to 3.0.98

Description An OS command injection issue exists in the PR Branch Name Interpolation component. The flaw is located within the run() function of the .github/workflows/prettier-on-automerge.yml file. This allows a remote attacker to execute arbitrary operating system commands, although the attack complexity is high and exploitability is considered difficult.

Recommendations Update to a version later than 3.0.97. As a temporary workaround, restrict access to or disable the run() function in the .github/workflows/prettier-on-automerge.yml file.

Exploit

Fix

Command Injection

OS Command Injection

Weakness Enumeration

CWE-77

CWE-78

Related Identifiers

CVE-2026-8767

Affected Products

Vercel Ai

References · 10

• 🔥 https://gist.github.com/YLChen-007/870bd6966cd84703d91ce54dfea3bdd0 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-8767 · Security Note
• https://twitter.com/CVEnew/status/2056253259300413712 · Twitter Post
• https://vuldb.com/vuln/364392 · Note
• https://twitter.com/VulmonFeeds/status/2056161521470726269 · Twitter Post
• https://vuldb.com/submit/811402 · Note
• https://t.me/CVEtracker/54078 · Telegram Post
• https://t.me/cveNotify/163800 · Telegram Post
• https://vuldb.com/vuln/364392/cti · Note
• https://twitter.com/f1tym1/status/2055956419208233223 · Twitter Post