CVE-2026-93659

HIGHPre-NVD 8.78.7—
EchelonGraph scoreHIGH confidence

Score 8.7 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-18. a secondary CVSS source baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

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

Concrete CMS Community Store before 2.7.8 renders customer-supplied order fields without HTML escaping in checkout and admin views. Unauthenticated attackers can store script payloads in billing name, email, or phone fields that execute in authenticated manager sessions to create rogue accounts or exfiltrate data.

CVSS v3
8.7
EG Score
8.7(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

Advisory Details (5)

Auto-updated Sep 18, 2026
Patch available. Sources: github_commit, github_release.
generic

Concrete CMS Community Store before 2.7.8 Stored XSS | Advisories | VulnCheck

https://www.vulncheck.com/advisories/concrete-cms-community-store-before-2.7.8-stored-xss
generic

GitHub - concretecms-community-store/community_store: An open, free and community developed eCommerce system for Concrete CMS · GitHub

https://github.com/concretecms-community-store/community_store
github_release Patch Available

Version 2.7.8

Patch available: concretecms-community-store/community_store v2.7.8

https://github.com/concretecms-community-store/community_store/releases/tag/v2.7.8
generic

community_store/elements/order_slip.php at v2.7.7 · concretecms-community-store/community_store · GitHub

https://github.com/concretecms-community-store/community_store/blob/v2.7.7/elements/order_slip.php
github_commit Patch Available

commit 2a802d6a5717 (concretecms-community-store/community_store)

Patch available: concretecms-community-store/community_store v2.7.8 (contains commit 2a802d6a5717)

https://github.com/concretecms-community-store/community_store/commit/2a802d6a5717f4e351ef21fdf8bdaf8061c40109

Vendor Advisories for CVE-2026-93659(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 15× in last 7d / 15× 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. 2026-09-21 09:08 UTCGHSA enrichment
  2. 2026-09-20 20:36 UTCEG score recompute
  3. 2026-09-20 20:36 UTCGHSA enrichment
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-20 08:04 UTCGHSA enrichment
  6. 2026-09-19 19:32 UTCEG score recompute
  7. 2026-09-19 19:32 UTCGHSA enrichment
  8. 2026-09-19 07:01 UTCGHSA enrichment
  9. 2026-09-18 18:29 UTCEG score recompute
  10. 2026-09-18 18:29 UTCGHSA enrichment
  11. 2026-09-18 18:15 UTCEG score recompute
  12. 2026-09-18 18:14 UTCGHSA enrichment
  13. 2026-09-18 15:24 UTCEG score recompute
  14. 2026-09-18 14:34 UTCEG score recompute
  15. 2026-09-18 14:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-93659?
CVE-2026-93659 is a high vulnerability published on September 18, 2026. Concrete CMS Community Store before 2.7.8 renders customer-supplied order fields without HTML escaping in checkout and admin views. Unauthenticated attackers can store script payloads in billing name, email, or phone fields that execute in authenticated manager sessions to create rogue accounts or…
When was CVE-2026-93659 disclosed?
CVE-2026-93659 was first published in the National Vulnerability Database 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-2026-93659 actively exploited?
CVE-2026-93659 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 82.3% of all scored CVEs.
What is the CVSS score of CVE-2026-93659?
CVE-2026-93659 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-93659?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93659, 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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