CVEvulnerability

CVE-2021-41146

8.8 HIGH Published 2021-10-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-10-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-641, CWE-77, CWE-88

Description

qutebrowser is an open source keyboard-focused browser with a minimal GUI. Starting with qutebrowser v1.7.0, the Windows installer for qutebrowser registers a `qutebrowserurl:` URL handler. With certain applications, opening a specially crafted `qutebrowserurl:...` URL can lead to execution of qutebrowser commands, which in turn allows arbitrary code execution via commands such as `:spawn` or `:debug-pyeval`. Only Windows installs where qutebrowser is registered as URL handler are affected. The issue has been fixed in qutebrowser v2.4.0. The fix also adds additional hardening for potential similar issues on Linux (by adding the new --untrusted-args flag to the .desktop file), though no such vulnerabilities are known.

Affected configurations

• qutebrowser qutebrowser (<= 1.7.0) • qutebrowser qutebrowser (>= 2.0.0 < 2.4.0)

Related

Weakness · CWE (3)

  • CWE-641 Improper Restriction of Names for Files and Other Resources weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command weakness

References