CVE-2020-18702 json
Cross Site Scripting (XSS) in Quokka
published 2021-08-16 5 y ago modified 2026-06-17 4 mo ago also GHSA-5m69-3chg-6f8m , PYSEC-2021-143 , EUVD-2021-0217
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
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'.
Patch / fix
Exploit prediction
1.31% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/rochacbruno/quokka/issues/675 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | quokka | <=0.4.0 all versions |
no fix listed |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/rochacbruno/quokka/issues/675
web, exploit, patch, third-party-advisory, report
-
nvd.nist.gov
/vuln/detail/CVE-2020-18702
advisory
-
github.com
/advisories/GHSA-5m69-3chg-6f8m
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/quokka/PYSEC-2021-143.yaml
web
-
github.com
/rochacbruno/quokka
package
Sources
- CVE List CVE-2020-18702
- GitHub Advisory GHSA-5m69-3chg-6f8m
- NVD CVE-2020-18702
- OSV PYSEC-2021-143
Fencer Vulns 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.