CVE-2026-88817

HIGHPre-NVD 8.78.7
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% 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 — 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.

An authenticated, non-guest user of Curiosity Workspace could enroll themselves as an administrator and member of an existing access group without an invitation or approval.

It did not grant application-wide administrator privileges, and the vulnerability could not be used to obtain root access to the application or its underlying host.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

September 16, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
No patch confirmed yet.

Vendor Advisories for CVE-2026-88817(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 16× 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. 2026-09-20 07:37 UTCGHSA enrichment
  2. 2026-09-19 18:54 UTCEG score recompute
  3. 2026-09-19 18:54 UTCGHSA enrichment
  4. 2026-09-19 06:22 UTCEG score recompute
  5. 2026-09-19 06:21 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 17:49 UTCGHSA enrichment
  8. 2026-09-18 16:34 UTCGHSA enrichment
  9. 2026-09-18 04:02 UTCEG score recompute
  10. 2026-09-18 04:02 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-17 15:30 UTCGHSA enrichment
  13. 2026-09-17 02:56 UTCGHSA enrichment
  14. 2026-09-16 13:27 UTCEG score recompute
  15. 2026-09-16 12:20 UTCEG score recompute
  16. 2026-09-16 12:20 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-88817?
CVE-2026-88817 is a high vulnerability published on September 16, 2026. An authenticated, non-guest user of Curiosity Workspace could enroll themselves as an administrator and member of an existing access group without an invitation or approval. It did not grant application-wide administrator privileges, and the vulnerability could not be used to obtain root access to…
When was CVE-2026-88817 disclosed?
CVE-2026-88817 was first published in the National Vulnerability Database on September 16, 2026, with the most recent update 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-2026-88817 actively exploited?
CVE-2026-88817 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 80.1% of all scored CVEs.
What is the CVSS score of CVE-2026-88817?
CVE-2026-88817 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-88817?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88817, 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

Explore the affected products and dependency analysis for CVE-2026-88817

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Is Your Infrastructure Affected by CVE-2026-88817?

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