Concrete CMS before 9.5.3 rendered Express entry labels as raw HTML when displaying associated entries, resulting in stored cross-site scripting. An unauthenticated attacker could submit a payload through a public Express Form; it then executed in an administrator's dashboard session when the associated entry was viewed, or in the browser of any visitor to a page using an Express Entry List block with association columns, allowing actions to be performed with that user's privileges. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks v01demort for reporting.
CVE-2026-68534
This low-severity CVE scores 2.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (44th 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).
- Lower severity and no public exploit yet
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 2.3
- EG Score
- 2.3LOWmedium confidence
- EG Risk
- 11EG Risk 11/100CISA 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 computedSeverity23% × 45%Exploitation1% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix. - EPSS PROB
- 0.6%
- EPSS %ILE
- 44th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
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
September 15, 2026
Last Modified
September 16, 2026
References (1)
- ff5b8ace-8b95-4078-9743-eac1ca5451dehttps://documentation.concretecms.org/developers/introduction/version-history/953-release-notes
Vendor Advisories for CVE-2026-68534(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 10× in last 7d / 31× 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.
- 2026-10-04 23:22 UTCEPSS rescore
- 2026-10-04 02:11 UTCEG score recompute
- 2026-10-04 02:11 UTCGHSA enrichment
- 2026-10-03 14:26 UTCEPSS rescore
- 2026-10-02 17:56 UTCEPSS rescore
- 2026-10-01 19:50 UTCEPSS rescore
- 2026-10-01 05:05 UTCEG score recompute
- 2026-10-01 05:05 UTCGHSA enrichment
- 2026-09-30 15:03 UTCEPSS rescore
- 2026-09-28 13:52 UTCEPSS rescore
- 2026-09-28 08:00 UTCEG score recompute
- 2026-09-28 07:59 UTCGHSA enrichment
- 2026-09-27 13:48 UTCEPSS rescore
- 2026-09-26 15:59 UTCEPSS rescore
- 2026-09-25 10:52 UTCEG score recompute
- 2026-09-25 10:52 UTCGHSA enrichment
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-22 13:34 UTCEG score recompute
- 2026-09-22 13:34 UTCGHSA enrichment
- 2026-09-21 21:09 UTCEPSS rescore
- 2026-09-20 20:16 UTCEPSS rescore
- 2026-09-19 16:29 UTCEG score recompute
- 2026-09-19 16:29 UTCGHSA enrichment
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-16 19:23 UTCEG score recompute
Show 6 moreShow fewer
- 2026-09-16 19:23 UTCGHSA enrichment
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-15 20:41 UTCEG score recompute
- 2026-09-15 19:37 UTCEG score recompute
- 2026-09-15 18:38 UTCEG score recompute
- 2026-09-15 18:37 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-68534?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-68534
Is Your Infrastructure Affected by CVE-2026-68534?
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