CVE-2021-41146
moderate-risk
Published 2021-10-21
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.
Do I need to act?
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0.74% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (1)
Qutebrowser
Affected Vendors
References (4)
Third Party Advisory
https://github.com/qutebrowser/qutebrowser/security/advisories/GHSA-vw27-fwjf-5q...
Third Party Advisory
https://github.com/qutebrowser/qutebrowser/security/advisories/GHSA-vw27-fwjf-5q...
38
/ 100
moderate-risk
Severity
30/34 · Critical
Exploitability
3/34 · Minimal
Exposure
5/34 · Minimal