# CVE-2026-123014: CVE-2026-123014

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

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

- fix: 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. (source: CNA: mitre)
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: mitre) — https://gitlab.com/gnachman/iterm2/-/commit/f29420ae4d3e0f986ee24ea286885d32af58175a
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: mitre) — https://gitlab.com/gnachman/iterm2/-/commit/314ba43920dbce08808c032e89966918090bdf8e

## Affected products and versions

- iTerm2 / iTerm2: ≥ 0; < 3.7.7beta2 (affected, custom). Source: CNA: mitre; platforms: MacOS

## Severity and prioritization

- CVSS 4.0: 8.7 (high); 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; source: CNA: mitre

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-88

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://gitlab.com/gnachman/iterm2/-/commit/f29420ae4d3e0f986ee24ea286885d32af58175a (CNA: mitre; patch)

- https://iterm2.com/downloads.html (CNA: mitre; release-notes)

- https://gitlab.com/gnachman/iterm2/-/commit/314ba43920dbce08808c032e89966918090bdf8e (CNA: mitre; patch)

## Provenance

- CNA: mitre: https://www.cve.org/CVERecord?id=CVE-2026-123014; retrieved 2026-11-05; source updated 2026-11-05

Revision: 54f72490531f2669a363812478af3f938b879f8cbf252525afd5538264c217ab

Canonical: https://y2.dev/cve/CVE-2026-123014

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