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Fencer Intel
low 3.5

CVE-2020-11054 json

Incorrect Provision of Specified Functionality in qutebrowser

published 6y ago modified last mo. also GHSA-4rcq-jv2f-898j , PYSEC-2020-97 , EUVD-2020-0161

cvss
3.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi qutebrowser 1.11.0, 1.11.1
  • qutebrowser qutebrowser 1.11.1
  • qutebrowser Debian 14, Debian 13, Debian 12 1.11.1.post1-1

debian advisories DEBIAN-CVE-2020-11054

  • qutebrowser openSUSE Tumbleweed 2.3.1-2.1

opensuse advisories openSUSE-SU-2024:11292-1

  • qutebrowser Arch Linux 1.11.1-1

arch linux advisories AVG-1152

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-11054 updated cvss 4.3

qutebrowser: Improper handling of certificates while visiting pages

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.51% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 3.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD 3.1 3.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
GitHub 3.1 3.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
pypi qutebrowser
<1.11.1
<1.11.0
1.11.1
1.11.0

Affected products

  • qutebrowser qutebrowser

Classification

Weakness
  • CWE-684 Incorrect Provision of Specified Functionality

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.