# Incorrect Provision of Specified Functionality in qutebrowser

Advisory record · `GHSA-4rcq-jv2f-898j`

- **Identifiers:** `GHSA-4rcq-jv2f-898j` · `CVE-2020-11054` · `PYSEC-2020-97`
- **State:** Confirmed
- **Severity:** CVSS 3.5 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-684](https://cwe.mitre.org/data/definitions/684.html)
- **Tags:** [CWE-684](https://agentprime.io/advisories/tag/cwe-684.md)
- **Published:** 8 May 2020
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 8 May 2020, 19:05 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `qutebrowser` (PyPI): affected `<1.11.1`; fixed in `1.11.1`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> qutebrowser versions before 1.11.1 display a URL as green after a user has overridden a certificate error for that site, when it should remain yellow. An attacker would need a site with a certificate problem that the user had already accepted, and the result is a false sense of security rather than direct compromise. Upgrade to qutebrowser 1.11.1. If upgrading is not possible, treat any host with a certificate exception as insecure, or set content.ssl_strict to True to prevent certificate exceptions.

Written 5 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 3.5 Low, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.015, the 74th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:38 UTC: First seen by agentprime
- 31 Oct 2026, 14:38 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-4rcq-jv2f-898j)

## Sources

- [GitHub Advisory Database: GHSA-4rcq-jv2f-898j](https://github.com/advisories/GHSA-4rcq-jv2f-898j)
- [OSV: GHSA-4rcq-jv2f-898j](https://osv.dev/vulnerability/GHSA-4rcq-jv2f-898j)
- <https://github.com/qutebrowser/qutebrowser/security/advisories/GHSA-4rcq-jv2f-898j>
- <https://nvd.nist.gov/vuln/detail/CVE-2020-11054>
- <https://github.com/qutebrowser/qutebrowser/issues/5403>
- <https://github.com/qutebrowser/qutebrowser/commit/021ab572a319ca3db5907a33a59774f502b3b975>
- <https://github.com/qutebrowser/qutebrowser/commit/19f01bb42d02da539446a52a25bb0c1232b86327>
- <https://github.com/qutebrowser/qutebrowser/commit/1b7946ed14b386a24db050f2d6dba81ba6518755>
- <https://github.com/qutebrowser/qutebrowser/commit/2281a205c3e70ec20f35ec8fafecee0d5c4f3478>
- <https://github.com/qutebrowser/qutebrowser/commit/4020210b193f77cf1785b21717f6ef7c5de5f0f8>
- <https://github.com/qutebrowser/qutebrowser/commit/6821c236f9ae23adf21d46ce0d56768ac8d0c467>
- <https://github.com/qutebrowser/qutebrowser/commit/9bd1cf585fccdfe8318fff7af793730e74a04db3>
- <https://github.com/qutebrowser/qutebrowser/commit/a45ca9c788f648d10cccce2af41405bf25ee2948>
- <https://github.com/qutebrowser/qutebrowser/commit/d28ed758d077a5bf19ddac4da468f7224114df23>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-4rcq-jv2f-898j>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-4rcq-jv2f-898j/>. Everything for agents: <https://agentprime.io/llms.txt>.