CVE-2026-81898

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% 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
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

In Concrete CMS below version 9.5.3, the Address attribute's country-less text formatter skipped HTML-escaping, enabling stored XSS in Express association views. A user able to submit an Address attribute could execute script in the session of any dashboard user who opened the affected entry. The unescaped branch was reachable because a non-required Address attribute accepted a blank country, and because several Express association templates (for example concrete/elements/express/form/view/dashboard/association.php) echoed the association label mask without applying h(). The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 7.5 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 20, 2026

References (1)

Vendor Advisories for CVE-2026-81898(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 30× in last 7d / 43× 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. 2026-09-25 02:38 UTCGHSA enrichment
  2. 2026-09-24 14:31 UTCEG score recompute
  3. 2026-09-24 14:31 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 02:24 UTCEG score recompute
  6. 2026-09-24 02:24 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 14:18 UTCGHSA enrichment
  9. 2026-09-23 02:11 UTCEG score recompute
  10. 2026-09-23 02:11 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 14:04 UTCGHSA enrichment
  13. 2026-09-22 01:57 UTCEG score recompute
  14. 2026-09-22 01:57 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 13:51 UTCGHSA enrichment
  17. 2026-09-21 01:45 UTCEG score recompute
  18. 2026-09-21 01:45 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 13:38 UTCGHSA enrichment
  21. 2026-09-20 01:31 UTCEG score recompute
  22. 2026-09-20 01:31 UTCGHSA enrichment
  23. 2026-09-20 01:02 UTCEG score recompute
  24. 2026-09-20 01:02 UTCGHSA enrichment
  25. 2026-09-19 20:03 UTCEG score recompute
Show 18 more
  1. 2026-09-19 20:03 UTCGHSA enrichment
  2. 2026-09-19 07:56 UTCGHSA enrichment
  3. 2026-09-18 19:50 UTCEG score recompute
  4. 2026-09-18 19:50 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 07:44 UTCGHSA enrichment
  7. 2026-09-17 19:37 UTCEG score recompute
  8. 2026-09-17 19:37 UTCGHSA enrichment
  9. 2026-09-17 07:30 UTCGHSA enrichment
  10. 2026-09-16 19:23 UTCGHSA enrichment
  11. 2026-09-16 18:45 UTCEG score recompute
  12. 2026-09-16 18:45 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 06:39 UTCGHSA enrichment
  15. 2026-09-15 18:32 UTCEG score recompute
  16. 2026-09-15 18:32 UTCGHSA enrichment
  17. 2026-09-15 17:39 UTCEG score recompute
  18. 2026-09-15 17:38 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81898?
CVE-2026-81898 is a high vulnerability published on September 15, 2026. In Concrete CMS below version 9.5.3, the Address attribute's country-less text formatter skipped HTML-escaping, enabling stored XSS in Express association views. A user able to submit an Address attribute could execute script in the session of any dashboard user who opened the affected entry. The…
When was CVE-2026-81898 disclosed?
CVE-2026-81898 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81898 actively exploited?
CVE-2026-81898 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 64.7% of all scored CVEs.
What is the CVSS score of CVE-2026-81898?
CVE-2026-81898 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-81898?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81898, 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.

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