Cleartext Transmission of Sensitive Information Affecting github.com/go-acme/lego/v4/acme/api/internal/sender package, versions <4.25.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMGOACMELEGOV4ACMEAPIINTERNALSENDER-11502810
- published7 Aug 2025
- disclosed7 Aug 2025
- creditSong Gao, chrisnojima, Antonio Marcedone
Introduced: 7 Aug 2025
NewCVE-2025-54799 Â (opens in a new tab)How to fix?
Upgrade github.com/go-acme/lego/v4/acme/api/internal/sender to version 4.25.2 or higher.
Overview
Affected versions of this package are vulnerable to Cleartext Transmission of Sensitive Information due to the lack of HTTPS enforcement for the ACME client. An attacker can intercept sensitive information by capturing unencrypted network traffic if the library user accidentally inputs an HTTP URL or the CA similarly misconfigures its endpoints.