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: 0.2%, top 94% of all CVEs by exploit prediction. 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%CVSS: 4.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
4.4(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

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 rangeFixed inDependents
django-cms5.0.85.0.9—

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 93.9% of all scored CVEs.
What is the CVSS score of CVE-2026-75526?
CVE-2026-75526 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-75526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75526, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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