{"cve":"CVE-2020-35681","nvd":{"published":"2021-02-22T03:15:14.310","modified":"2026-06-17T03:14:07.267","status":"Modified","description":"Django Channels 3.x before 3.0.3 allows remote attackers to obtain sensitive information from a different request scope. The legacy channels.http.AsgiHandler class, used for handling HTTP type requests in an ASGI environment prior to Django 3.0, did not correctly separate request scopes in Channels 3.0. In many cases this would result in a crash but, with correct timing, responses could be sent to the wrong client, resulting in potential leakage of session identifiers and other sensitive data. Note that this affects only the legacy Channels provided class, and not Django's similar ASGIHandler, available from Django 3.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H","score":7.4},"cwes":["CWE-200"],"references":["https://channels.readthedocs.io/en/stable/releases/3.0.3.html","https://channels.readthedocs.io/en/stable/releases/index.html","https://github.com/django/channels/releases","https://channels.readthedocs.io/en/stable/releases/3.0.3.html","https://channels.readthedocs.io/en/stable/releases/index.html"],"products":["djangoproject:channels"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2020-35681","score":0.02658,"percentile":0.85684,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-v542-8q9x-cffc","url":"https://osv.dev/vulnerability/GHSA-v542-8q9x-cffc","summary":"Django Channels leakage of session identifiers using legacy AsgiHandler","modified":"2024-09-13T18:01:43.817869Z","packages":[{"ecosystem":"PyPI","name":"channels","purl":"pkg:pypi/channels","ranges":[">=3.0.0 <3.0.3"],"fixed":["3.0.3"]}]},{"id":"PYSEC-2021-113","url":"https://osv.dev/vulnerability/PYSEC-2021-113","summary":"","modified":"2023-11-08T04:03:35.366407Z","packages":[{"ecosystem":"PyPI","name":"channels","purl":"pkg:pypi/channels","ranges":[">=3.0.0 <3.0.3"],"fixed":["3.0.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}