CVE-2020-11054 | Incorrect Provision of Specified Functionality in qutebrowser

In qutebrowser versions less than 1.11.1, reloading a page with certificate errors shows a green URL. After a certificate error was overridden by the user, qutebrowser displays the URL as yellow (colors.statusbar.url.warn.fg). However, when the affected website was subsequently loaded again, the URL was mistakenly displayed as green (colors.statusbar.url.success_https). While the user already has seen a certificate error prompt at this point (or set content.ssl_strict to false, which is not recommended), this could still provide a false sense of security. This has been fixed in 1.11.1 and 1.12.0. All versions of qutebrowser are believed to be affected, though versions before v0.11.x couldn't be tested. Backported patches for older versions (greater than or equal to 1.4.0 and less than or equal to 1.10.2) are available, but no further releases are planned.

Published: 2020-05-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-11054 is rated Low Risk (37.7/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.65%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-11054

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.93% 0.65% -0.28%
2 2025-03-29 0.65% 0.93% +0.28%
3 2025-03-19 — 0.65% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11054

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.5 3.1 LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 1.4 [email protected]
3.5 3.1 LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 1.4 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-11054

GitHub Security Advisory for CVE-2020-11054

GHSA-4rcq-jv2f-898j · Severity: low · Ecosystem: pip — Incorrect Provision of Specified Functionality in qutebrowser

OS Trackers for CVE-2020-11054

vendor priority summary link
debian unimportant CVE-2020-11054 unimportant priority: Debian including 1 source packages (qutebrowser), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-11054
ubuntu low CVE-2020-11054 low priority: Ubuntu including 1 source packages (qutebrowser), 17 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 11, needs-triage 3, DNE 2, ignored 1. https://ubuntu.com/security/CVE-2020-11054

Affected software / configurations for CVE-2020-11054

Vendor Product Version Raw CPE
qutebrowser qutebrowser < 1.11.1 cpe:2.3:a:qutebrowser:qutebrowser:*:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

References for CVE-2020-11054

URL Tags
https://bugs.kde.org/show_bug.cgi?id=420902 Issue Tracking Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/021ab572a319ca3db5907a33a59774f502b3b975 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/19f01bb42d02da539446a52a25bb0c1232b86327 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/1b7946ed14b386a24db050f2d6dba81ba6518755 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/2281a205c3e70ec20f35ec8fafecee0d5c4f3478 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/4020210b193f77cf1785b21717f6ef7c5de5f0f8 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/6821c236f9ae23adf21d46ce0d56768ac8d0c467 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/9bd1cf585fccdfe8318fff7af793730e74a04db3 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/a45ca9c788f648d10cccce2af41405bf25ee2948 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/d28ed758d077a5bf19ddac4da468f7224114df23 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/commit/f5d801251aa5436aff44660c87d7013e29ac5864 Patch Third Party Advisory
https://github.com/qutebrowser/qutebrowser/issues/5403 Issue Tracking Third Party Advisory
https://github.com/qutebrowser/qutebrowser/security/advisories/GHSA-4rcq-jv2f-898j Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YWJ5QNHXKTGG5NLV7EGEOKPBVZBA5GS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKAZOOTJ2MBHTYVYQQ52NL53F5CB2XAP/
https://tracker.die-offenbachs.homelinux.org/eric/issue328 Broken Link Third Party Advisory
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