Lightwell Security Advisory: apache-mime4j-core 0.8.9.rhlw-00004

{
  "id": "6a7ff50c4b996766f9a130d6a3f231d08180464a350392691fc057194695cfd0",
  "url": "https://osv.dev/vulnerability/RHLW-2026-e78d277bde69c3f5",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Lightwell Security Advisory: apache-mime4j-core 0.8.9.rhlw-00004",
    "summary": "Red Hat Lightwell has released org.apache.james:apache-mime4j-core 0.8.9.rhlw-00004 with a backported security fix. CVE-2024-21742: Improper input validation allows for header injection in MIME4J library when using MIME4J DOM for composing message. This can be exploited by an attacker to add unintended headers to MIME messages. This patched artifact is a drop-in replacement for org.apache.james:apache-mime4j-core 0.8.9 from Maven Central.",
    "evidence": "osv:RHLW-2026-e78d277bde69c3f5",
    "products": [
      {
        "name": {
          "value": "org.apache.james:apache-mime4j-core",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.8.9.rhlw-00004",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "0.7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.7.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.7.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.9",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "RHLW-2026-e78d277bde69c3f5",
      "aliases": [
        "RHLW-2026-e78d277bde69c3f5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.8.9.rhlw-00004"
                }
              ]
            }
          ],
          "package": {
            "name": "org.apache.james:apache-mime4j-core",
            "purl": "pkg:maven/org.apache.james/apache-mime4j-core",
            "ecosystem": "Red Hat Lightwell:Maven"
          },
          "versions": [
            "0.7",
            "0.7.1",
            "0.7.2",
            "0.8.0",
            "0.8.1",
            "0.8.2",
            "0.8.3",
            "0.8.4",
            "0.8.5",
            "0.8.6",
            "0.8.7",
            "0.8.8",
            "0.8.9"
          ],
          "database_specific": {
            "source": "https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-e78d277bde69c3f5.json",
            "lightwell": {
              "repository_url": "https://packages.redhat.com/lightwell/java/remediated/",
              "remediated_version": "0.8.9.rhlw-00004",
              "backport_base_version": "0.8.9"
            }
          }
        }
      ],
      "modified": "2026-10-27T04:00:17.366694125Z",
      "provider": "osv",
      "upstream": [
        "CVE-2024-21742",
        "GHSA-jw7r-rxff-gv24"
      ],
      "references": [
        "https://lists.apache.org/thread/nrqzg93219wdj056pqfszsd33dc54kfy",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-21742",
        "https://github.com/advisories/GHSA-jw7r-rxff-gv24"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2024-21742",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 460143,
  "published_at": "2026-09-28T20:42:52+00:00"
}