Authenticated command execution via branch-name interpolation
Published May 17, 2026 · Updated May 17, 2026
OS command injection in Vercel AI SDK 3.0.0 through 3.0.97 allows remote authenticated users to execute commands through a pull request. The pull_request_target workflow expands github.event.pull_request.head.ref directly inside its Bash run block, so shell metacharacters in a branch name become commands on the runner. An attacker must be able to submit a pull request; execution occurs with the workflow runner's repository permissions and available secrets.
Summary
What happened
OS command injection in Vercel AI SDK 3.0.0 through 3.0.97 allows remote authenticated users to execute commands through a pull request. The pull_request_target workflow expands github.event.pull_request.head.ref directly inside its Bash run block, so shell metacharacters in a branch name become commands on the runner. An attacker must be able to submit a pull request; execution occurs with the workflow runner's repository permissions and available secrets.
The record
- CVE
- CVE-2026-8767
- Published
- May 17, 2026
- Updated
- May 17, 2026
- Vendor
- Vercel
- Product
- AI SDK
- Classifications
- CWE-78, CWE-77, T1059.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 17, 2026CVE publishedPublication date reported by the CVE source.
- May 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.0.0
- Affected versionversion=3.0.1
- Affected versionversion=3.0.10
- Affected versionversion=3.0.11
- Affected versionversion=3.0.12
- Affected versionversion=3.0.13
- Affected versionversion=3.0.14
- Affected versionversion=3.0.15
- Affected versionversion=3.0.16
- Affected versionversion=3.0.17
- Affected versionversion=3.0.18
- Affected versionversion=3.0.19
- Affected versionversion=3.0.2
- Affected versionversion=3.0.20
- Affected versionversion=3.0.21
- Affected versionversion=3.0.22
- Affected versionversion=3.0.23
- Affected versionversion=3.0.24
- Affected versionversion=3.0.25
- Affected versionversion=3.0.26
- Affected versionversion=3.0.27
- Affected versionversion=3.0.28
- Affected versionversion=3.0.29
- Affected versionversion=3.0.3
- Affected versionversion=3.0.30
- Affected versionversion=3.0.31
- Affected versionversion=3.0.32
- Affected versionversion=3.0.33
- Affected versionversion=3.0.34
- Affected versionversion=3.0.35
- Affected versionversion=3.0.36
- Affected versionversion=3.0.37
- Affected versionversion=3.0.38
- Affected versionversion=3.0.39
- Affected versionversion=3.0.4
- Affected versionversion=3.0.40
- Affected versionversion=3.0.41
- Affected versionversion=3.0.42
- Affected versionversion=3.0.43
- Affected versionversion=3.0.44
- Affected versionversion=3.0.45
- Affected versionversion=3.0.46
- Affected versionversion=3.0.47
- Affected versionversion=3.0.48
- Affected versionversion=3.0.49
- Affected versionversion=3.0.5
- Affected versionversion=3.0.50
- Affected versionversion=3.0.51
- Affected versionversion=3.0.52
- Affected versionversion=3.0.53
- Affected versionversion=3.0.54
- Affected versionversion=3.0.55
- Affected versionversion=3.0.56
- Affected versionversion=3.0.57
- Affected versionversion=3.0.58
- Affected versionversion=3.0.59
- Affected versionversion=3.0.6
- Affected versionversion=3.0.60
- Affected versionversion=3.0.61
- Affected versionversion=3.0.62
- Affected versionversion=3.0.63
- Affected versionversion=3.0.64
- Affected versionversion=3.0.65
- Affected versionversion=3.0.66
- Affected versionversion=3.0.67
- Affected versionversion=3.0.68
- Affected versionversion=3.0.69
- Affected versionversion=3.0.7
- Affected versionversion=3.0.70
- Affected versionversion=3.0.71
- Affected versionversion=3.0.72
- Affected versionversion=3.0.73
- Affected versionversion=3.0.74
- Affected versionversion=3.0.75
- Affected versionversion=3.0.76
- Affected versionversion=3.0.77
- Affected versionversion=3.0.78
- Affected versionversion=3.0.79
- Affected versionversion=3.0.8
- Affected versionversion=3.0.80
- Affected versionversion=3.0.81
- Affected versionversion=3.0.82
- Affected versionversion=3.0.83
- Affected versionversion=3.0.84
- Affected versionversion=3.0.85
- Affected versionversion=3.0.86
- Affected versionversion=3.0.87
- Affected versionversion=3.0.88
- Affected versionversion=3.0.89
- Affected versionversion=3.0.9
- Affected versionversion=3.0.90
- Affected versionversion=3.0.91
- Affected versionversion=3.0.92
- Affected versionversion=3.0.93
- Affected versionversion=3.0.94
- Affected versionversion=3.0.95
- Affected versionversion=3.0.96
- Affected versionversion=3.0.97
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Branch-name command-injection proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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