CVE-2026-8767: vercel ai Command Injection
Vulnerability summary
CVE-2026-8767 is a high (CVSS 7.5) Command Injection vulnerability in vercel ai. EPSS estimates a 6.97% chance of exploitation in the next 30 days, higher than 94.1% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 17-05-2026PublishedVulnerability first disclosed.
- 18-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
7 scores · 2 sources · 4 versions- NVDNIST1.3LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XDiffers
- CVE.orgCNA5.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:RDiffers
- NVDNIST4.6MediumAV:N/AC:H/Au:S/C:P/I:P/A:P
EPSS trend
Probability
6.97%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
+1.87 pp
From 5.10% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 found870Bd6966Cd84703D91Ce54Dfea3Bdd0
Maturity: poc
Weaknesses
CWE · root cause- CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Affected systems
Vercel1 product
- ai3.0.0 | 3.0.1 | 3.0.2 | 3.0.3 | 3.0.4 | 3.0.5 | 3.0.6 | 3.0.7 | 3.0.8 | 3.0.9 | 3.0.10 | 3.0.11 | 3.0.12 | 3.0.13 | 3.0.14 | 3.0.15 | 3.0.16 | 3.0.17 | 3.0.18 | 3.0.19 | 3.0.20 | 3.0.21 | 3.0.22 | 3.0.23 | 3.0.24 | 3.0.25 | 3.0.26 | 3.0.27 | 3.0.28 | 3.0.29 | 3.0.30 | 3.0.31 | 3.0.32 | 3.0.33 | 3.0.34 | 3.0.35 | 3.0.36 | 3.0.37 | 3.0.38 | 3.0.39 | 3.0.40 | 3.0.41 | 3.0.42 | 3.0.43 | 3.0.44 | 3.0.45 | 3.0.46 | 3.0.47 | 3.0.48 | 3.0.49 | 3.0.50 | 3.0.51 | 3.0.52 | 3.0.53 | 3.0.54 | 3.0.55 | 3.0.56 | 3.0.57 | 3.0.58 | 3.0.59 | 3.0.60 | 3.0.61 | 3.0.62 | 3.0.63 | 3.0.64 | 3.0.65 | 3.0.66 | 3.0.67 | 3.0.68 | 3.0.69 | 3.0.70 | 3.0.71 | 3.0.72 | 3.0.73 | 3.0.74 | 3.0.75 | 3.0.76 | 3.0.77 | 3.0.78 | 3.0.79 | 3.0.80 | 3.0.81 | 3.0.82 | 3.0.83 | 3.0.84 | 3.0.85 | 3.0.86 | 3.0.87 | 3.0.88 | 3.0.89 | 3.0.90 | 3.0.91 | 3.0.92 | 3.0.93 | 3.0.94 | 3.0.95 | 3.0.96 | 3.0.97 | ≤ 3.0.97
1 vendor · 1 product