CVE-2026-63003

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

September 18, 2026

Advisory Details (4)

Auto-updated Aug 20, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_pr, github_commit.
github_release Patch Available

5.0.9

Patch available: django-cms/django-cms 5.0.9

https://github.com/django-cms/django-cms/releases/tag/5.0.9
github_commit Patch Available

commit 3e1ccf7573eb (django-cms/django-cms)

Patch available: django-cms/django-cms 5.0.9 (contains commit 3e1ccf7573eb)

https://github.com/django-cms/django-cms/commit/3e1ccf7573eb1a74ebbbfaaa812c1f5cadf14e6c
github_pr Patch Available

fix: Harden page duplication, group permissions and URL validator (#8704)

Patch available: django-cms/django-cms 5.0.9 (PR #8713 merged 2026-07-08)

https://github.com/django-cms/django-cms/pull/8713
github Patch Available🟡 PoC Available

Broken access control in page *Duplicate* allows reading the content of any page (cross-site / restriction bypass) · Advisory · django-cms/django-cms · GitHub

https://github.com/django-cms/django-cms/security/advisories/GHSA-6x92-6vx4-5fwr

Vendor Advisories for CVE-2026-63003(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
django-cms2.0.1 ... 5.0.8 (141 versions)
  • every version up to 5.0.9: fixed in 5.0.9
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 40× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-03 16:47 UTCEG score recompute
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-02 17:56 UTCEPSS rescore
  5. 2026-10-02 12:55 UTCEG score recompute
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-10-01 09:47 UTCEG score recompute
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-30 08:13 UTCEG score recompute
  10. 2026-09-29 06:09 UTCEG score recompute
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-28 04:34 UTCEG score recompute
  13. 2026-09-27 03:00 UTCEG score recompute
  14. 2026-09-26 15:59 UTCEPSS rescore
  15. 2026-09-25 05:45 UTCEG score recompute
  16. 2026-09-24 04:12 UTCEG score recompute
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 02:38 UTCEG score recompute
  19. 2026-09-22 01:05 UTCEG score recompute
  20. 2026-09-20 23:31 UTCEG score recompute
  21. 2026-09-20 20:16 UTCEPSS rescore
  22. 2026-09-19 21:53 UTCEG score recompute
  23. 2026-09-18 20:19 UTCEG score recompute
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 17:41 UTCEG score recompute
Show 45 more
  1. 2026-09-16 14:33 UTCEG score recompute
  2. 2026-09-16 14:08 UTCEPSS rescore
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 12:59 UTCEG score recompute
  5. 2026-09-14 11:25 UTCEG score recompute
  6. 2026-09-13 09:52 UTCEG score recompute
  7. 2026-09-12 08:19 UTCEG score recompute
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 09:37 UTCEPSS rescore
  10. 2026-09-11 06:45 UTCEG score recompute
  11. 2026-09-08 02:03 UTCEG score recompute
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-07 00:29 UTCEG score recompute
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-05 22:41 UTCEG score recompute
  16. 2026-09-05 15:31 UTCEPSS rescore
  17. 2026-09-04 21:07 UTCEG score recompute
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-02 16:46 UTCEG score recompute
  20. 2026-09-02 14:12 UTCEPSS rescore
  21. 2026-09-01 15:05 UTCEG score recompute
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 13:10 UTCEG score recompute
  25. 2026-08-30 19:17 UTCEPSS rescore
  26. 2026-08-30 11:26 UTCEG score recompute
  27. 2026-08-30 01:22 UTCEPSS rescore
  28. 2026-08-29 09:52 UTCEG score recompute
  29. 2026-08-28 21:42 UTCEPSS rescore
  30. 2026-08-28 08:18 UTCEG score recompute
  31. 2026-08-27 14:25 UTCEPSS rescore
  32. 2026-08-27 06:44 UTCEG score recompute
  33. 2026-08-26 14:46 UTCEPSS rescore
  34. 2026-08-26 04:41 UTCEG score recompute
  35. 2026-08-25 13:49 UTCEPSS rescore
  36. 2026-08-25 03:07 UTCEG score recompute
  37. 2026-08-24 01:33 UTCEG score recompute
  38. 2026-08-23 00:19 UTCEPSS rescore
  39. 2026-08-23 00:00 UTCEG score recompute
  40. 2026-08-21 23:49 UTCEPSS rescore
  41. 2026-08-21 22:26 UTCEG score recompute
  42. 2026-08-21 21:54 UTCEG score recompute
  43. 2026-08-20 19:18 UTCEG score recompute
  44. 2026-08-20 18:22 UTCEG score recompute
  45. 2026-08-20 18:21 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-63003?
CVE-2026-63003 is a medium vulnerability published on August 20, 2026. 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…
When was CVE-2026-63003 disclosed?
CVE-2026-63003 was first published on August 20, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63003 actively exploited?
CVE-2026-63003 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-63003?
CVE-2026-63003 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-63003?
A fix for CVE-2026-63003 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-63003 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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