Improper Neutralization of Escape, Meta, or Control Sequences in GitHub CLI - CVE-2026-45803
Published: May 18, 2026
Vulnerability identifier: #VU131751
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45803
CWE-ID: CWE-150
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitHub CLI
Affected software:
GitHub CLI
GitHub CLI
Detailed vulnerability description
The vulnerability allows a remote user to manipulate terminal output.
The vulnerability exists due to improper neutralization of terminal escape sequences in the `gh run view` log output handling when displaying GitHub Actions workflow logs. A remote user can embed terminal escape sequences in workflow log content to manipulate terminal output.
User interaction is required when a victim views logs with gh run view --log or gh run view --log-failed, and the practical impact depends on the terminal emulator in use.
How to mitigate CVE-2026-45803
Install security update from vendor's website.