CVE-2026-100557

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in skill tool dispatch that fails to carry the sender's owner status. Non-owner senders authorized to invoke skill commands can access owner-only tools and server credentials reserved for owners.

CVSS v3
8.3
EG Score
8.3HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity83% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 29, 2026

Advisory Details (2)

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

OpenClaw before 2026.8.1 Authorization Bypass via Skill Tool Dispatch | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-authorization-bypass-via-skill-tool-dispatch
github Patch Available

Skill tool dispatch could skip owner-only policy · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-7cp7-87pj-p32v

Vendor Advisories for CVE-2026-100557(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 29× in last 7d / 36× 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 12:39 UTCGHSA enrichment
  2. 2026-10-03 23:51 UTCEG score recompute
  3. 2026-10-03 23:50 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 11:03 UTCGHSA enrichment
  6. 2026-10-02 22:15 UTCEG score recompute
  7. 2026-10-02 22:15 UTCGHSA enrichment
  8. 2026-10-02 09:27 UTCGHSA enrichment
  9. 2026-10-01 20:39 UTCEG score recompute
  10. 2026-10-01 20:39 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 07:50 UTCGHSA enrichment
  13. 2026-09-30 19:02 UTCEG score recompute
  14. 2026-09-30 19:02 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 06:14 UTCGHSA enrichment
  17. 2026-09-29 17:26 UTCEG score recompute
  18. 2026-09-29 17:25 UTCGHSA enrichment
  19. 2026-09-29 17:06 UTCEG score recompute
  20. 2026-09-29 17:06 UTCGHSA enrichment
  21. 2026-09-29 15:20 UTCEPSS rescore
  22. 2026-09-29 04:19 UTCEG score recompute
  23. 2026-09-29 04:19 UTCGHSA enrichment
  24. 2026-09-28 15:31 UTCEG score recompute
  25. 2026-09-28 15:31 UTCGHSA enrichment
Show 11 more
  1. 2026-09-28 13:50 UTCEPSS rescore
  2. 2026-09-28 06:39 UTCGHSA enrichment
  3. 2026-09-27 17:51 UTCEG score recompute
  4. 2026-09-27 17:51 UTCGHSA enrichment
  5. 2026-09-27 05:04 UTCGHSA enrichment
  6. 2026-09-26 16:15 UTCEG score recompute
  7. 2026-09-26 16:15 UTCGHSA enrichment
  8. 2026-09-26 15:58 UTCEPSS rescore
  9. 2026-09-26 03:25 UTCEG score recompute
  10. 2026-09-26 02:32 UTCEG score recompute
  11. 2026-09-26 02:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100557?
CVE-2026-100557 is a high vulnerability published on September 26, 2026. OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in skill tool dispatch that fails to carry the sender's owner status. Non-owner senders authorized to invoke skill commands can access owner-only tools and server credentials reserved for owners.
When was CVE-2026-100557 disclosed?
CVE-2026-100557 was first published on September 26, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100557 actively exploited?
CVE-2026-100557 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100557?
CVE-2026-100557 has a CVSS base score of 8.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100557?
A fix for CVE-2026-100557 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100557 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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