Vulnerabilites related to go-acme - lego
CVE-2025-54799 (GCVE-0-2025-54799)
Vulnerability from cvelistv5
Published
2025-08-07 00:04
Modified
2025-08-07 14:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-319 - Cleartext Transmission of Sensitive Information
Summary
Let's Encrypt client and ACME library written in Go (Lego). In versions 4.25.1 and below, the github.com/go-acme/lego/v4/acme/api package (thus the lego library and the lego cli as well) don't enforce HTTPS when talking to CAs as an ACME client. Unlike the http-01 challenge which solves an ACME challenge over unencrypted HTTP, the ACME protocol requires HTTPS when a client communicates with the CA to performs ACME functions. However, the library fails to enforce HTTPS both in the original discover URL (configured by the library user) and in the subsequent addresses returned by the CAs in the directory and order objects. If users input HTTP URLs or CAs misconfigure endpoints, protocol operations occur over HTTP instead of HTTPS. This compromises privacy by exposing request/response details like account and request identifiers to network attackers. This was fixed in version 4.25.2.
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2025-54799", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2025-08-07T14:07:23.435795Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2025-08-07T14:07:32.104Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" } ], "cna": { "affected": [ { "product": "lego", "vendor": "go-acme", "versions": [ { "status": "affected", "version": "\u003c 4.25.2" } ] } ], "descriptions": [ { "lang": "en", "value": "Let\u0027s Encrypt client and ACME library written in Go (Lego). In versions 4.25.1 and below, the github.com/go-acme/lego/v4/acme/api package (thus the lego library and the lego cli as well) don\u0027t enforce HTTPS when talking to CAs as an ACME client. Unlike the http-01 challenge which solves an ACME challenge over unencrypted HTTP, the ACME protocol requires HTTPS when a client communicates with the CA to performs ACME functions. However, the library fails to enforce HTTPS both in the original discover URL (configured by the library user) and in the subsequent addresses returned by the CAs in the directory and order objects. If users input HTTP URLs or CAs misconfigure endpoints, protocol operations occur over HTTP instead of HTTPS. This compromises privacy by exposing request/response details like account and request identifiers to network attackers. This was fixed in version 4.25.2." } ], "metrics": [ { "cvssV4_0": { "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 2.3, "baseSeverity": "LOW", "privilegesRequired": "NONE", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-319", "description": "CWE-319: Cleartext Transmission of Sensitive Information", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2025-08-07T00:04:14.718Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "name": "https://github.com/go-acme/lego/security/advisories/GHSA-q82r-2j7m-9rv4", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/go-acme/lego/security/advisories/GHSA-q82r-2j7m-9rv4" }, { "name": "https://github.com/go-acme/lego/commit/238454b5f74f3cfcbb244ff0d0dc914a4ad44b96", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/go-acme/lego/commit/238454b5f74f3cfcbb244ff0d0dc914a4ad44b96" } ], "source": { "advisory": "GHSA-q82r-2j7m-9rv4", "discovery": "UNKNOWN" }, "title": "Lego does not enforce HTTPS" } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2025-54799", "datePublished": "2025-08-07T00:04:14.718Z", "dateReserved": "2025-07-29T16:50:28.395Z", "dateUpdated": "2025-08-07T14:07:32.104Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }