MEDIUM
CVE-2026-42427
CWE-184Published: April 28, 2026· Updated: Apr 30, 2026
5.3
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:7.7th
Official Description
OpenClaw before 2026.4.8 contains a remote code execution vulnerability caused by missing environment variable denylist entries for HGRCPATH, CARGO_BUILD_RUSTC_WRAPPER, RUSTC_WRAPPER, and MAKEFLAGS. Attackers can inject malicious build tool environment variables to influence host exec commands and achieve arbitrary code execution.
Technical Analysis
CVE-2026-42427 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.3.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Affected Vendors & Products
openclaw1 product
openclaw
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
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PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (3)
Quick Facts
CVE IDCVE-2026-42427
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-184
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedApr 28, 2026
Related CVEs (CWE-184)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-42427 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.