CVE-2026-123014

Argument Injection via x-man-page URL Handler in iTerm2

Published Nov 5, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
iTerm2 before 3.7.7beta2 has an argument injection vulnerability in the x-man-page: URL handler, allowing an attacker to execute arbitrary commands with the privileges of the logged-in user by inducing the user to open a crafted URL in iTerm2. Percent-encoded NUL characters survive input sanitization and are subsequently converted to whitespace during command-line parsing, allowing injection of additional arguments to /usr/bin/man. An attacker can inject the -P option to select an attacker-controlled pager command. NOTE: this issue exists because of an incomplete fix for CVE-2023-46321.

Remediation

Vendor Solution

The maintainer confirms that the fix first shipped in iTerm2 3.7.7beta2 and will be included in the 3.7.7 stable release. The x-man-page: handler now validates manual-page sections and page names against an allowlist of characters. URLs containing NUL or other disallowed characters are rejected with a warning. Users should upgrade to a release containing this fix.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Argument Injection via x-man-page URL Handler in iTerm2
Type Values Removed Values Added
Description iTerm2 before 3.7.7beta2 has an argument injection vulnerability in the x-man-page: URL handler, allowing an attacker to execute arbitrary commands with the privileges of the logged-in user by inducing the user to open a crafted URL in iTerm2. Percent-encoded NUL characters survive input sanitization and are subsequently converted to whitespace during command-line parsing, allowing injection of additional arguments to /usr/bin/man. An attacker can inject the -P option to select an attacker-controlled pager command. NOTE: this issue exists because of an incomplete fix for CVE-2023-46321.
First Time appeared Iterm2
Iterm2 iterm2
Weaknesses CWE-88
CPEs cpe:2.3:a:iterm2:iterm2:*:*:*:*:*:*:*:*
Vendors & Products Iterm2
Iterm2 iterm2
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 10, 2026, 1:54 PM
Reserved
Nov 5, 2026, 5:25 AM
Status
Awaiting Analysis
Published
Nov 5, 2026, 6:17 AM
Modified
Nov 12, 2026, 10:09 PM