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ACME Lego: Arbitrary File Write via Path Traversal in Webroot HTTP-01 Provider

ACME Lego: Arbitrary File Write via Path Traversal in Webroot HTTP-01 Provider

CVE-2026-40611Published 5 months agoUpdated 5 days agoSource: OSV

Affected packages

  • github.com/go-acme/lego
  • github.com/go-acme/lego/v3
  • github.com/go-acme/lego/v4

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
EPSS percentile

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

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