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CVE-2026-40611 Lego: Arbitrary File Write via Path Traversal in Webroot HTTP-01 Provider

🗓️ 21 Apr 2026 17:58:35Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 26 Views

Lego before 4.34.0 allows arbitrary file write via path traversal in the webroot HTTP-01 provider.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Chainguard
CVE-2026-40611 vulnerabilities
18 Apr 202601:17
cgr
Circl
CVE-2026-40611
15 Apr 202619:52
circl
CNNVD
Lego 安全漏洞
21 Apr 202600:00
cnnvd
CVE
CVE-2026-40611
21 Apr 202617:58
cve
Debian CVE
CVE-2026-40611
21 Apr 202617:58
debiancve
Github Security Blog
ACME Lego: Arbitrary File Write via Path Traversal in Webroot HTTP-01 Provider
16 Apr 202621:28
github
NVD
CVE-2026-40611
21 Apr 202618:16
nvd
OSV
CGA-Q9RR-8PQ2-573M
17 Apr 202621:15
osv
OSV
DEBIAN-CVE-2026-40611
21 Apr 202618:16
osv
OSV
GHSA-QQX8-2XMM-JRV8 ACME Lego: Arbitrary File Write via Path Traversal in Webroot HTTP-01 Provider
16 Apr 202621:28
osv
Rows per page
[
  {
    "vendor": "go-acme",
    "product": "lego",
    "versions": [
      {
        "version": "< 4.34.0",
        "status": "affected"
      }
    ]
  }
]

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21 Apr 2026 17:58Current
CVSS 3.18.8
EPSS0.00054
26