Apache HttpComponents: PSL (Public Suffix List) validation bypass

{
  "id": "b53087a9f7235861da6cbc32e83250c6c995e891d0fc7fddbaf783ad612801c0",
  "url": "https://osv.dev/vulnerability/CVE-2025-27820",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache HttpComponents: PSL (Public Suffix List) validation bypass",
    "summary": "A bug in PSL validation logic in Apache HttpClient 5.4.x disables domain checks, affecting cookie management and host name verification. Discovered by the Apache HttpClient team. Fixed in the 5.4.3 release",
    "evidence": "osv:CVE-2025-27820",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-27820",
      "aliases": [
        "CVE-2025-27820",
        "GHSA-73m2-qfq3-56cx"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/httpcomponents-client",
              "type": "GIT",
              "events": [
                {
                  "introduced": "84cccfe6300bca6b37abd05af527df08a781b677"
                },
                {
                  "fixed": "48236f5f1a7b78f4446d2c00c4c25c598148f57b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "5.4.0"
                      },
                      {
                        "fixed": "5.4.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:httpclient:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.4"
                      },
                      {
                        "fixed": "5.4.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27820.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.279930039Z",
      "provider": "osv",
      "references": [
        "https://hc.apache.org/httpcomponents-client-5.4.x/index.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27820.json",
        "https://lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-27820",
        "https://security.netapp.com/advisory/ntap-20250516-0003/",
        "https://github.com/apache/httpcomponents-client/pull/574",
        "https://github.com/apache/httpcomponents-client/pull/621"
      ],
      "provider_metadata": {
        "cna_assigner": "apache",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27820.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-27820",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503299,
  "published_at": "2025-04-24T11:44:25.986+00:00"
}