Vulnerabilities in pkg:pypi/quokka

PACKAGE
Advisory Identifier: GHSA-5m69-3chg-6f8m
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Advisory Summary

CVE-2020-18702 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Quokka libraries in the PyPI ecosystem. The issue involves cross site scripting (xss) in quokka. Remediation is available in the latest vendor maintenance releases.

3 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/quokka

3 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/quokka. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-5m69-3chg-6f8m CVE-2020-18702 MODERATE Cross Site Scripting (XSS) in Quokka
GHSA-4q2r-qxp6-h5j6 CVE-2020-18705 CRITICAL Improper Restriction of XML External Entity Reference in Quokka
GHSA-3xg5-6c3j-vp8x CVE-2020-18703 CRITICAL Improper Restriction of XML External Entity Reference in Quokka

CVE-2020-18702 at a Glance

CVE Identifier CVE-2020-18702
GHSA Identifier GHSA-5m69-3chg-6f8m
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Quokka
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2020-18702

To remediate this vulnerability, upgrade all affected Quokka dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

quokka fixed: Latest secure release 
pip install quokka>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show quokka

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2020-18702, inspect your installed packages using pip:

pip show quokka

Analyze the terminal output to locate any version of Quokka in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show quokka command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Quokka, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Cross Site Scripting (XSS) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the 'Username' parameter in the component 'quokka/admin/actions.py'.

CVE-2020-18702 Affected Quokka Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
quokka
pypi/quokka
PyPI
≤ 0.4.0

References

NVD — CVE-2020-18702 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-18702
Quokka Source Repository REPOSITORY
https://github.com/rochacbruno/quokka/issues/675
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-5m69-3chg-6f8m
Quokka Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/quokka/PYSEC-2021-143.yaml
Quokka Source Repository REPOSITORY
https://github.com/rochacbruno/quokka

Frequently Asked Questions

What is CVE-2020-18702?
CVE-2020-18702 is a security vulnerability in Quokka involving Cross Site Scripting (XSS) in Quokka under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Quokka versions are affected?
Affected versions include releases prior to current release patches across affected packages: quokka.
What version fixes CVE-2020-18702?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is quokka affected?
Yes, quokka is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-18702?
CVE-2020-18702 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-18702?
CVE-2020-18702 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check PyPI dependencies for CVE-2020-18702?
Run the dependency tree command: 'pip show quokka'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5m69-3chg-6f8m",
  "modified" : "2024-10-24T21:55:10Z",
  "published" : "2021-08-30T16:23:26Z",
  "aliases" : [ "CVE-2020-18702" ],
  "summary" : "Cross Site Scripting (XSS) in Quokka",
  "details" : "Cross Site Scripting (XSS) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the 'Username' parameter in the component 'quokka/admin/actions.py'.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "quokka"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-18702"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rochacbruno/quokka/issues/675"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-5m69-3chg-6f8m"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/quokka/PYSEC-2021-143.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rochacbruno/quokka"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-26T19:21:15Z",
    "nvd_published_at" : "2021-08-16T18:15:00Z"
  }
}