{"id":"CVE-2026-54625","aliases":["GHSA-fwjf-m4qw-9f2x"],"url":"https://o3.security/vulnerability/CVE-2026-54625","summary":"django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)","details":"django CMS is a content management system powered by Django. Prior to 5.0.8 and in 5.1.0a1, the django CMS page cache in cms/cache/page.py ignores request headers declared by plugins through get_vary_cache_on(). The _page_cache_key function includes the cache prefix, site, language, path, and timezone but not the declared header values. Although set_page_cache adds those names to the response Vary header, get_page_cache retrieves the first stored variant under the same header-agnostic key. When CMS_PAGE_CACHE is enabled and a plugin varies content on a header such as Country-Code, one visitor can receive another visitor’s request-specific content, and an unauthenticated attacker can prime the cache with attacker-chosen content. This issue is fixed in versions 5.0.8 and 5.1.0.","published":"2026-08-20T17:58:03.255Z","modified":"2026-08-22T03:58:06.563272417Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"django-cms","fixedVersion":"5.0.8"}],"fix":{"url":"https://github.com/django-cms/django-cms/commit/8758714b865ffa79c6bcd0e5c503958ea48885aa","label":"django-cms/django-cms@8758714"},"references":[{"type":"WEB","url":"https://github.com/django-cms/django-cms/releases/tag/5.0.8"},{"type":"WEB","url":"https://github.com/django-cms/django-cms/releases/tag/5.1.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54625.json"},{"type":"ADVISORY","url":"https://github.com/django-cms/django-cms/security/advisories/GHSA-fwjf-m4qw-9f2x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54625"},{"type":"FIX","url":"https://github.com/django-cms/django-cms/commit/8758714b865ffa79c6bcd0e5c503958ea48885aa"},{"type":"FIX","url":"https://github.com/django-cms/django-cms/commit/d5dc1efa18d157445491c4b12c2dd1efd56f439f"},{"type":"FIX","url":"https://github.com/django-cms/django-cms/pull/8646"},{"type":"FIX","url":"https://github.com/django-cms/django-cms/pull/8647"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-22T03:58:06.563272417Z"}}