CVE-2026-100564

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-09-26. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenClaw versions before 2026.8.1 fail to neutralize spreadsheet formula characters in participant display names within attendance CSV exports. Attackers can inject formula-like cells that execute with spreadsheet user permissions when the export is opened in formula-enabled applications.

CVSS v3
5.4
EG Score
5.4MEDIUMhigh confidence
EG Risk
24
EG Risk 24/100CISA 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 computed
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

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 26, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
Patch available. Sources: github.
generic

OpenClaw before 2026.8.1 CSV Formula Injection via Attendance Export | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-csv-formula-injection-via-attendance-export
github Patch Available

Google Meet attendance CSV could interpret names as formulas · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-39hf-qg99-f4qv

Vendor Advisories for CVE-2026-100564(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 23× 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.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 18:03 UTCGHSA enrichment
  3. 2026-10-03 19:36 UTCEG score recompute
  4. 2026-10-03 19:36 UTCGHSA enrichment
  5. 2026-10-03 14:25 UTCEPSS rescore
  6. 2026-10-02 21:10 UTCEG score recompute
  7. 2026-10-02 21:10 UTCGHSA enrichment
  8. 2026-10-01 22:41 UTCEG score recompute
  9. 2026-10-01 22:41 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 00:15 UTCEG score recompute
  12. 2026-10-01 00:15 UTCGHSA enrichment
  13. 2026-09-30 15:02 UTCEPSS rescore
  14. 2026-09-30 01:30 UTCEG score recompute
  15. 2026-09-30 01:30 UTCGHSA enrichment
  16. 2026-09-30 00:37 UTCEG score recompute
  17. 2026-09-30 00:37 UTCGHSA enrichment
  18. 2026-09-29 15:20 UTCEPSS rescore
  19. 2026-09-29 13:57 UTCEG score recompute
  20. 2026-09-29 13:57 UTCGHSA enrichment
  21. 2026-09-28 15:31 UTCEG score recompute
  22. 2026-09-28 15:31 UTCGHSA enrichment
  23. 2026-09-28 13:50 UTCEPSS rescore
  24. 2026-09-28 00:20 UTCEG score recompute
  25. 2026-09-28 00:20 UTCGHSA enrichment
Show 6 more
  1. 2026-09-27 01:54 UTCEG score recompute
  2. 2026-09-27 01:54 UTCGHSA enrichment
  3. 2026-09-26 15:58 UTCEPSS rescore
  4. 2026-09-26 03:25 UTCEG score recompute
  5. 2026-09-26 02:31 UTCEG score recompute
  6. 2026-09-26 02:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100564?
CVE-2026-100564 is a medium vulnerability published on September 26, 2026. OpenClaw versions before 2026.8.1 fail to neutralize spreadsheet formula characters in participant display names within attendance CSV exports. Attackers can inject formula-like cells that execute with spreadsheet user permissions when the export is opened in formula-enabled applications.
When was CVE-2026-100564 disclosed?
CVE-2026-100564 was first published on September 26, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100564 actively exploited?
CVE-2026-100564 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100564?
CVE-2026-100564 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100564?
A fix for CVE-2026-100564 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100564 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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