Vulnerability in django-cms (CVE-2026-63003)
Summary
Vulnerability in django-cms (CVE-2026-63003). Confidential information can be exposed externally. Exploitable via POST /admin/cms/pagecontent/. Mitigation: upgrade to 5.0.9 or later.
Original description
The description as published by the source.
django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django. Prior to 5.0.9, page duplication lacks an object-level authorization check on the source page. In cms/admin/forms.py, DuplicatePageForm.source accepts any Page, the AddPageForm constructor does not narrow a hidden source field, AddPageForm.clean does not validate the source against the user, and AddPageForm.save calls from_source. In cms/admin/pageadmin.py, duplicate and PageAdmin.has_add_permission check only whether a staff user may add a page. A crafted source value can therefore copy every placeholder and plugin from an unauthorized page with permissions=False, stripping source view restrictions and exposing content across sites or restricted subtrees when CMS_PERMISSION is enabled. This issue is fixed in versions 5.0.9.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-63003 has been found in django-cms.
Attackers can target a specific entry point like POST /admin/cms/pagecontent/ over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 6.5/10.
What to do: upgrade django-cms to 5.0.9 or later.
If unsure, ask your IT team or search "django-cms CVE-2026-63003" on the vendor's site.
CVE-2026-63003 (django-cms) — CWE-639 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Attack surface: POST /admin/cms/pagecontent/ / PageAdmin.has_add_permission / AddPageForm.__init__ / source
Patched: 5.0.9 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-639) exists in django-cms. Attackers reach the vulnerable code path via POST /admin/cms/pagecontent/.
Check the vendor advisory for the affected versions of django-cms. Attack surface: POST /admin/cms/pagecontent/ / PageAdmin.has_add_permission / AddPageForm.__init__ / source.
Severity: Medium (CVSS 6.5/10). Confidential information can be exposed externally.
Update to 5.0.9.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual POST /admin/cms/pagecontent/ requests with malformed payloads or SQL meta-characters. Run grep -r 'django-cms' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'django-cms' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
django-cmsを grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'POST /admin/cms/pagecontent/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
POST /admin/cms/pagecontent/への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Apply patch patch
Upgrade django-cms to 5.0.9ステージング環境で 5.0.9 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 2 で見つけた異常検知の続報チェックを含めること。
-
4Post-deployment verification verify
Replay attack against POST /admin/cms/pagecontent/ on staging to confirm patch closes the vectorパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 2 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- patch github.com
- web github.com
- web github.com