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CVE-2026-42420

🗓️ 28 Apr 2026 18:10:11Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 51 Views

OpenClaw before 2026.4.8 has improper base64 decoding size validation causing memory exhaustion and denial of service.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-42420
28 Apr 202618:10
–attackerkb
cnnvd
CNNVD
OpenClaw 安全漏洞
28 Apr 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-42420 OpenClaw < 2026.4.8 - Improper Base64 Decoding Size Validation
28 Apr 202618:10
–cvelist
euvd
EUVD
EUVD-2026-26123
28 Apr 202618:10
–euvd
github
Github Security Blog
OpenClaw: Multiple Code Paths Missing Base64 Pre-Allocation Size Checks
9 Apr 202617:37
–github
mend
Mend
CVE-2026-42420
28 Apr 202618:10
–mend
nvd
NVD
CVE-2026-42420
28 Apr 202619:37
–nvd
osv
OSV
GHSA-CCX3-FW7Q-RR2R OpenClaw: Multiple Code Paths Missing Base64 Pre-Allocation Size Checks
9 Apr 202617:37
–osv
ptsecurity
Positive Technologies
PT-2026-33671
9 Apr 202600:00
–ptsecurity
ptsecurity
Positive Technologies
PT-2026-35799
28 Apr 202600:00
–ptsecurity
Rows per page
NVD
Vulners
CNA
Node
openclawopenclawRange<2026.4.8node.js
[
  {
    "vendor": "OpenClaw",
    "product": "OpenClaw",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:npm/openclaw",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "2026.4.8"
      },
      {
        "version": "2026.4.8",
        "status": "unaffected",
        "versionType": "semver"
      }
    ]
  }
]

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17 Jun 2026 10:47Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3 - 6.5
CVSS 45.3
EPSS0.00548
51