OpenClaw versions before 2026.8.1 contain a command parser vulnerability where escaped newlines confuse exec allowlist parsing, allowing hidden… (CVE-2026-100559)
OpenClaw versions before 2026.8.1 have a command parser vulnerability (CVE-2026-100559) where escaped newline characters can bypass exec allowlist validation, enabling execution of hidden commands. This flaw allows attackers with limited privileges to execute unauthorized commands by crafting input that confuses the allowlist parser. The vulnerability has a high severity rating with a CVSS score of 8.0.
AI Analysis
Technical Summary
CVE-2026-100559 describes a command parser vulnerability in OpenClaw versions prior to 2026.8.1. The flaw arises because escaped newline characters in input can disrupt the exec allowlist parsing logic, allowing attackers to inject and execute additional commands that should be blocked. This bypass of allowlist validation can lead to unauthorized command execution with high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows attackers with limited privileges to execute arbitrary commands without triggering expected authorization prompts, potentially leading to full system compromise. The CVSS score of 8.0 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.1. Users should upgrade to version 2026.8.1 or later to remediate this vulnerability. No other mitigation guidance is provided.
OpenClaw versions before 2026.8.1 contain a command parser vulnerability where escaped newlines confuse exec allowlist parsing, allowing hidden… (CVE-2026-100559)
Description
OpenClaw versions before 2026.8.1 have a command parser vulnerability (CVE-2026-100559) where escaped newline characters can bypass exec allowlist validation, enabling execution of hidden commands. This flaw allows attackers with limited privileges to execute unauthorized commands by crafting input that confuses the allowlist parser. The vulnerability has a high severity rating with a CVSS score of 8.0.
CVSS v3.1
Score 8.0high
Affected software
pkg:github/openclaw/openclawRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-100559 describes a command parser vulnerability in OpenClaw versions prior to 2026.8.1. The flaw arises because escaped newline characters in input can disrupt the exec allowlist parsing logic, allowing attackers to inject and execute additional commands that should be blocked. This bypass of allowlist validation can lead to unauthorized command execution with high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows attackers with limited privileges to execute arbitrary commands without triggering expected authorization prompts, potentially leading to full system compromise. The CVSS score of 8.0 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.1. Users should upgrade to version 2026.8.1 or later to remediate this vulnerability. No other mitigation guidance is provided.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w63f-m9c2-9g74
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100559"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6ab74f2af7a7c54106e13832
Added to database: 09/26/2026, 04:50:50 UTC
Last enriched: 09/26/2026, 04:54:55 UTC
Last updated: 09/27/2026, 01:47:40 UTC
Views: 3
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