CVE-2026-75526

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (16th 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
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.4Exploit: 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. From 5.0.8 until 5.0.9, ContentRenderer.render_placeholder in cms/plugin_rendering.py can pass stored, attacker-controlled values to ContentRenderer.render_exception when plugin rendering fails in edit mode. Values from get_short_description(), the exception message, the placeholder, or placeholder.source are interpolated into a cms-rendering-exception heading and later returned through mark_safe. Because the heading is not escaped, stored HTML executes in an editor’s browser, and settings.DEBUG does not prevent the custom heading from rendering. The fix uses format_html to escape the message before safe placeholder output is returned. This issue is fixed in versions 5.0.9.

CVSS v3
4.4
EG Score
4.4MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100CISA 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
Severity44% × 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
0.3%
EPSS %ILE
16th
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 9, 2026

Advisory Details (4)

Auto-updated Aug 20, 2026
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 b56a568844ff (django-cms/django-cms)

Patch available: django-cms/django-cms 5.0.9 (contains commit b56a568844ff)

https://github.com/django-cms/django-cms/commit/b56a568844ff3702495945f73a31d0868285bf88
github_pr Patch Available

fix: Page title leaked unescaped into rendering error message, clipboard could be cleared by get request (#8699)

Patch available: django-cms/django-cms 5.0.9 (PR #8711 merged 2026-06-30)

https://github.com/django-cms/django-cms/pull/8711
github Patch Available

Stored XSS in edit-mode plugin exception rendering · Advisory · django-cms/django-cms · GitHub

https://github.com/django-cms/django-cms/security/advisories/GHSA-hvq6-2r72-p2x7

Vendor Advisories for CVE-2026-75526(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-cms5.0.8
  • 5.0.8 up to 5.0.9: fixed in 5.0.9
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 47× 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 11:05 UTCEG score recompute
  5. 2026-10-01 19:50 UTCEPSS rescore
  6. 2026-10-01 09:31 UTCEG score recompute
  7. 2026-09-30 08:12 UTCEG score recompute
  8. 2026-09-29 15:24 UTCEPSS rescore
  9. 2026-09-29 05:37 UTCEG score recompute
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-28 04:18 UTCEG score recompute
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-27 03:00 UTCEG score recompute
  14. 2026-09-26 15:59 UTCEPSS rescore
  15. 2026-09-26 00:28 UTCEPSS rescore
  16. 2026-09-24 19:06 UTCEG score recompute
  17. 2026-09-24 14:04 UTCEPSS rescore
  18. 2026-09-23 17:54 UTCEPSS rescore
  19. 2026-09-23 16:06 UTCEG score recompute
  20. 2026-09-22 16:01 UTCEPSS rescore
  21. 2026-09-22 14:48 UTCEG score recompute
  22. 2026-09-21 21:09 UTCEPSS rescore
  23. 2026-09-21 13:28 UTCEG score recompute
  24. 2026-09-20 20:16 UTCEPSS rescore
  25. 2026-09-20 12:01 UTCEG score recompute
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  1. 2026-09-19 10:12 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 08:12 UTCEG score recompute
  4. 2026-09-17 06:53 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:33 UTCEG score recompute
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 04:14 UTCEG score recompute
  9. 2026-09-15 03:12 UTCEPSS rescore
  10. 2026-09-14 02:55 UTCEG score recompute
  11. 2026-09-13 01:37 UTCEG score recompute
  12. 2026-09-12 15:02 UTCEPSS rescore
  13. 2026-09-12 00:18 UTCEG score recompute
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-10 22:59 UTCEG score recompute
  16. 2026-09-10 09:35 UTCEPSS rescore
  17. 2026-09-09 01:56 UTCEG score recompute
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-07 18:47 UTCEG score recompute
  20. 2026-09-06 17:29 UTCEG score recompute
  21. 2026-09-06 13:48 UTCEPSS rescore
  22. 2026-09-05 16:10 UTCEG score recompute
  23. 2026-09-04 14:52 UTCEG score recompute
  24. 2026-09-04 05:07 UTCEPSS rescore
  25. 2026-09-02 12:12 UTCEG score recompute
  26. 2026-09-01 13:54 UTCEPSS rescore
  27. 2026-09-01 10:53 UTCEG score recompute
  28. 2026-09-01 04:40 UTCEPSS rescore
  29. 2026-09-01 04:40 UTCEPSS rescore
  30. 2026-08-31 09:31 UTCEG score recompute
  31. 2026-08-30 19:18 UTCEPSS rescore
  32. 2026-08-30 19:17 UTCEPSS rescore
  33. 2026-08-30 08:12 UTCEG score recompute
  34. 2026-08-30 01:22 UTCEPSS rescore
  35. 2026-08-29 06:53 UTCEG score recompute
  36. 2026-08-28 21:42 UTCEPSS rescore
  37. 2026-08-28 05:34 UTCEG score recompute
  38. 2026-08-27 14:25 UTCEPSS rescore
  39. 2026-08-27 04:11 UTCEG score recompute
  40. 2026-08-26 14:47 UTCEPSS rescore
  41. 2026-08-26 02:53 UTCEG score recompute
  42. 2026-08-25 13:49 UTCEPSS rescore
  43. 2026-08-25 01:34 UTCEG score recompute
  44. 2026-08-24 14:18 UTCEPSS rescore
  45. 2026-08-24 00:16 UTCEG score recompute
  46. 2026-08-23 00:19 UTCEPSS rescore
  47. 2026-08-22 22:58 UTCEG score recompute
  48. 2026-08-21 23:49 UTCEPSS rescore
  49. 2026-08-20 20:20 UTCEG score recompute
  50. 2026-08-20 19:22 UTCEG score recompute
  51. 2026-08-20 19:18 UTCEG score recompute
  52. 2026-08-20 18:22 UTCEG score recompute
  53. 2026-08-20 18:21 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-75526?
CVE-2026-75526 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. From 5.0.8 until 5.0.9, ContentRenderer.renderplaceholder in cms/pluginrendering.py can pass stored, attacker-controlled values to ContentRenderer.renderexception when plugin rendering fails…
When was CVE-2026-75526 disclosed?
CVE-2026-75526 was first published on August 20, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75526 actively exploited?
CVE-2026-75526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75526?
CVE-2026-75526 has a CVSS base score of 4.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75526?
A fix for CVE-2026-75526 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75526 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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