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CVE-2020-18705

Improper Restriction of XML External Entity Reference in Quokka

9.8 Critical

CVE-2020-18705 is a critical vulnerability (CVSS 9.8) in Quokka Project Quokka, published August 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.77%, the 86th percentile. No source names a fixed version.

What does this mean?
Severity
9.8 CriticalCVSS 3.1, NVD
Exploit chance
2.77%EPSS, 86th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.77%Up 1.9 points since Aug 17, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
quokka
PyPI
through 0.4.0None known
quokka
PyPI
through 0.4.0, plus listed versions
0.0.1.dev840.1.00.2.00.3.00.3.1
Show 5 moreShow less
0.3.20.3.30.3.40.3.6.dev10.3.7.dev1
None known
quokka
PyPI
All versions, plus listed versions
0.0.1.dev840.1.00.2.00.3.00.3.1
Show 8 moreShow less
0.3.20.3.30.3.40.3.6.dev10.3.7.dev10.4.00.4.1.dev220.4.1.dev6
None known

What each source reports

NVD Score used9.8

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
CVE-2020-18705
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-611
Updated
2026-11-02
CVE ListNo score

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
CVE-2020-18705
Updated
2026-11-02
EUVDEUVD-2021-0219No score

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
EUVD-2021-0219
Updated
2026-11-03
GitHub AdvisoriesGHSA-4q2r-qxp6-h5j69.8

Improper Restriction of XML External Entity Reference in Quokka

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
GHSA-4q2r-qxp6-h5j6
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-611
Updated
2026-11-02
OSV9.8

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
CVE-2020-18705
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-4q2r-qxp6-h5j69.8

Improper Restriction of XML External Entity Reference in Quokka

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
GHSA-4q2r-qxp6-h5j6
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-611
Updated
2026-11-02
OSVPYSEC-2021-145No score

XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.

Record
PYSEC-2021-145
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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