CVE-2020-18705 json
Improper Restriction of XML External Entity Reference in Quokka
published 5y ago modified 4mo ago also GHSA-4q2r-qxp6-h5j6 , PYSEC-2021-145 , EUVD-2021-0219
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
XML External Entities (XXE) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the component 'quokka/core/content/views.py'.
Patch / fix
- github.com/quokkaproject/quokka#679 pull request
- github.com/rochacbruno/quokka/issues/676 advisory
Is CVE-2020-18705 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
2.77% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/rochacbruno/quokka/issues/676 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | quokka | <=0.4.0 all versions |
no fix listed |
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
github.com
/rochacbruno/quokka/issues/676
web, exploit, patch, third-party-advisory, report
-
github.com
/quokkaproject/quokka/pull/679
web
-
nvd.nist.gov
/vuln/detail/CVE-2020-18705
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/quokka/PYSEC-2021-145.yaml
web
-
github.com
/rochacbruno/quokka
package
-
github.com
/advisories/GHSA-4q2r-qxp6-h5j6
advisory
Sources
- CVE List CVE-2020-18705
- GitHub Advisory GHSA-4q2r-qxp6-h5j6
- NVD CVE-2020-18705
- OSV PYSEC-2021-145
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.