CVE-2026-100559

HIGHPre-NVD 8.08.0—
EchelonGraph scoreHIGH confidence

Score 8.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 8.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.0EG
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: 8.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenClaw versions before 2026.8.1 contain a command parser vulnerability where escaped newlines confuse exec allowlist parsing, allowing hidden commands to execute. Attackers can craft input with escaped newlines to bypass allowlist validation and execute additional commands without expected authorization prompts.

CVSS v3
8.0
EG Score
8.0HIGHhigh confidence
EG Risk
41
EG Risk 41/100CISA 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
Severity80% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
14th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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 28, 2026

Advisory Details (2)

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

OpenClaw before 2026.8.1 Command Injection via Escaped Newlines | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-command-injection-via-escaped-newlines
github Patch Available

Escaped newlines could confuse exec allowlist parsing · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-9f86-pvv5-rxfw

Vendor Advisories for CVE-2026-100559(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 26× in last 7d / 33× 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 02:06 UTCEG score recompute
  2. 2026-10-04 02:06 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-03 13:08 UTCGHSA enrichment
  5. 2026-10-03 00:09 UTCEG score recompute
  6. 2026-10-03 00:09 UTCGHSA enrichment
  7. 2026-10-02 11:10 UTCGHSA enrichment
  8. 2026-10-01 22:12 UTCEG score recompute
  9. 2026-10-01 22:11 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 09:10 UTCGHSA enrichment
  12. 2026-09-30 20:11 UTCEG score recompute
  13. 2026-09-30 20:11 UTCGHSA enrichment
  14. 2026-09-30 15:02 UTCEPSS rescore
  15. 2026-09-30 07:13 UTCGHSA enrichment
  16. 2026-09-29 18:14 UTCEG score recompute
  17. 2026-09-29 18:14 UTCGHSA enrichment
  18. 2026-09-29 15:20 UTCEPSS rescore
  19. 2026-09-29 04:30 UTCEG score recompute
  20. 2026-09-29 04:30 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 07:20 UTCGHSA enrichment
  25. 2026-09-27 18:22 UTCEG score recompute
Show 8 more
  1. 2026-09-27 18:22 UTCGHSA enrichment
  2. 2026-09-27 05:23 UTCGHSA enrichment
  3. 2026-09-26 16:24 UTCEG score recompute
  4. 2026-09-26 16:24 UTCGHSA enrichment
  5. 2026-09-26 15:58 UTCEPSS rescore
  6. 2026-09-26 03:25 UTCEG score recompute
  7. 2026-09-26 02:31 UTCEG score recompute
  8. 2026-09-26 02:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100559?
CVE-2026-100559 is a high vulnerability published on September 26, 2026. OpenClaw versions before 2026.8.1 contain a command parser vulnerability where escaped newlines confuse exec allowlist parsing, allowing hidden commands to execute. Attackers can craft input with escaped newlines to bypass allowlist validation and execute additional commands without expected…
When was CVE-2026-100559 disclosed?
CVE-2026-100559 was first published on September 26, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100559 actively exploited?
CVE-2026-100559 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100559?
CVE-2026-100559 has a CVSS base score of 8.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100559?
A fix for CVE-2026-100559 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100559 are linked in the Vendor Advisories panel on this page.

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