CVE-2026-68535

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 64% 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, nvd
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate() method on submitted data, which, for file-referencing blocks such as hero_image and gallery, is where the referenced file is authorized against the user's file-manager visibility. As a result, an authenticated user holding the block-add scope could store, and cause the page to render, a reference to a file that the file-manager authorization policy would otherwise reject, disclosing that file's URL and preview to the editor and to visitors of the affected page. Under public file storage, the URL and thumbnail are exposed directly; under private storage, the disclosure is limited by the permission-checked download URL. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 5.1 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.

CVSS v3
4.3
EG Score
4.3(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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 24, 2026

References (1)

Vendor Advisories for CVE-2026-68535(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 41× 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. 2026-09-24 20:15 UTCEG score recompute▼ 0.80
  2. 2026-09-24 20:15 UTCGHSA enrichment
  3. 2026-09-24 20:15 UTCNVD updateCVSS v3 → 4.3
  4. 2026-09-24 04:41 UTCEG score recompute
  5. 2026-09-24 04:41 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-23 05:54 UTCEG score recompute
  8. 2026-09-23 05:54 UTCGHSA enrichment
  9. 2026-09-22 07:06 UTCEG score recompute
  10. 2026-09-22 07:06 UTCGHSA enrichment
  11. 2026-09-21 21:09 UTCEPSS rescore
  12. 2026-09-21 08:20 UTCEG score recompute
  13. 2026-09-21 08:19 UTCGHSA enrichment
  14. 2026-09-20 20:16 UTCEPSS rescore
  15. 2026-09-20 09:31 UTCEG score recompute
  16. 2026-09-20 09:31 UTCGHSA enrichment
  17. 2026-09-19 10:43 UTCEG score recompute
  18. 2026-09-19 10:43 UTCGHSA enrichment
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-18 11:45 UTCEG score recompute
  21. 2026-09-18 11:45 UTCGHSA enrichment
  22. 2026-09-17 12:58 UTCEG score recompute
  23. 2026-09-17 12:58 UTCGHSA enrichment
  24. 2026-09-16 14:08 UTCEPSS rescore
  25. 2026-09-16 13:50 UTCEG score recompute
Show 16 more
  1. 2026-09-16 13:50 UTCGHSA enrichment
  2. 2026-09-16 05:15 UTCEPSS rescore
  3. 2026-09-15 15:01 UTCGHSA enrichment
  4. 2026-09-15 12:17 UTCEG score recompute
  5. 2026-09-15 12:17 UTCGHSA enrichment
  6. 2026-09-14 13:29 UTCEG score recompute
  7. 2026-09-14 13:29 UTCGHSA enrichment
  8. 2026-09-14 13:10 UTCEG score recompute
  9. 2026-09-14 13:10 UTCGHSA enrichment
  10. 2026-09-13 18:55 UTCEG score recompute
  11. 2026-09-13 18:55 UTCGHSA enrichment
  12. 2026-09-12 20:08 UTCEG score recompute
  13. 2026-09-12 20:08 UTCGHSA enrichment
  14. 2026-09-11 21:21 UTCEG score recompute
  15. 2026-09-11 20:29 UTCEG score recompute
  16. 2026-09-11 20:28 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-68535?
CVE-2026-68535 is a medium vulnerability published on September 11, 2026. Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate() method on submitted data, which, for file-referencing blocks such as hero_image and gallery, is where the referenced file is authorized against the user's file-manager…
When was CVE-2026-68535 disclosed?
CVE-2026-68535 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68535 actively exploited?
CVE-2026-68535 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 64.4% of all scored CVEs.
What is the CVSS score of CVE-2026-68535?
CVE-2026-68535 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-68535?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68535, 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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