{"id":"PYSEC-2026-1304","summary":"Cross-site Scripting in djangorestframework","details":"Versions of the package djangorestframework before 3.15.2 are vulnerable to Cross-site Scripting (XSS) via the break_long_headers template filter due to improper input sanitization before splitting and joining with \u003cbr\u003e tags.","aliases":["CVE-2024-21520","GHSA-gw84-84pc-xp82"],"modified":"2026-07-07T17:46:38.015942532Z","published":"2026-07-07T14:34:35.497172Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21520"},{"type":"WEB","url":"https://github.com/encode/django-rest-framework/pull/9435"},{"type":"WEB","url":"https://github.com/encode/django-rest-framework/commit/3b41f0124194430da957b119712978fa2266b642"},{"type":"PACKAGE","url":"https://github.com/encode/django-rest-framework"},{"type":"WEB","url":"https://github.com/encode/django-rest-framework/compare/3.15.1...3.15.2"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-PYTHON-DJANGORESTFRAMEWORK-7252137"},{"type":"PACKAGE","url":"https://pypi.org/project/djangorestframework"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-gw84-84pc-xp82"}],"affected":[{"package":{"name":"djangorestframework","ecosystem":"PyPI","purl":"pkg:pypi/djangorestframework"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.15.2"}]}],"versions":["0.1","0.1.1","0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.3.0","0.3.1","0.3.2","0.3.3","0.4.0","2.0.0","2.0.1","2.0.2","2.1.0","2.1.1","2.1.10","2.1.11","2.1.12","2.1.13","2.1.14","2.1.15","2.1.16","2.1.17","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.1.9","2.2.0","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.3.0","2.3.1","2.3.10","2.3.11","2.3.12","2.3.13","2.3.14","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.3.8","2.3.9","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7","2.4.8","3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.1.0","3.1.1","3.1.2","3.1.3","3.10.0","3.10.1","3.10.2","3.10.3","3.11.0","3.11.1","3.11.2","3.12.0","3.12.1","3.12.2","3.12.3","3.12.4","3.13.0","3.13.1","3.14.0","3.15.0","3.15.1","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.3.0","3.3.1","3.3.2","3.3.3","3.4.0","3.4.1","3.4.2","3.4.3","3.4.4","3.4.5","3.4.6","3.4.7","3.5.0","3.5.1","3.5.2","3.5.3","3.5.4","3.6.0","3.6.1","3.6.2","3.6.3","3.6.4","3.7.0","3.7.1","3.7.2","3.7.3","3.7.4","3.7.5","3.7.6","3.7.7","3.8.0","3.8.1","3.8.2","3.9.0","3.9.1","3.9.2","3.9.3","3.9.4"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/djangorestframework/PYSEC-2026-1304.yaml"}}],"schema_version":"1.7.5","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:L/VA:N/SC:L/SI:L/SA:N/E:P"}]}