jackson-core — security advisory

{
  "id": "c994fd87b4a59c8687a0e2eca86e2cb8cb31e37bddf973f12f152ffcd206d523",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-89425",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-89425",
    "summary": "UTF8DataInputJsonParser._reportInvalidToken() in FasterXML jackson-core builds the offending-token text for its error message by appending Java identifier characters to a StringBuilder in a loop that has no upper bound. Unlike the three sibling parser implementations, including UTF8StreamJsonParser, it never consults ErrorReportConfiguration.getMaxErrorTokenLength() (default 256). A malformed token supplied to a parser created through JsonFactory.createParser(DataInput) is therefore accumulated in full. No StreamReadConstraints setting mitigates this: maxDocumentLength cannot be applied to DataInput sources at all, and maxStringLength does not cover this path because the accumulation bypasses ReadConstrainedTextBuffer. The reporter measured a 20,000,109-character exception message from a 20-million-character malformed token on the DataInput path, against 367 characters for identical input on the InputStream path. Scaling the payload drives the StringBuilder, which also incurs byte-to-char expansion and internal array doubling, to many times the raw payload size and can trigger OutOfMemoryError for the whole JVM. UTF8DataInputJsonParser was introduced in 2.8.0 together with createParser(DataInput); releases before 2.8.0 do not contain the affected class.",
    "evidence": "osv:DEBIAN-CVE-2026-89425",
    "products": [
      {
        "name": {
          "value": "jackson-core",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.14.1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.14.1-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.14.1-2~deb11u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.14.1-2~deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.14.1-2~deb13u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.18.11-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "jackson-core",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.14.1-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.14.1-2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.14.1-2~deb11u1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.14.1-2~deb12u1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.14.1-2~deb13u1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.18.11-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "jackson-core",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.18.11-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.14.1-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.14.1-2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.14.1-2~deb11u1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.14.1-2~deb12u1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.14.1-2~deb13u1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-89425",
      "aliases": [
        "DEBIAN-CVE-2026-89425"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "jackson-core",
            "purl": "pkg:deb/debian/jackson-core?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "2.14.1-1",
            "2.14.1-2",
            "2.14.1-2~deb11u1",
            "2.14.1-2~deb12u1",
            "2.14.1-2~deb13u1",
            "2.18.11-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89425.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "jackson-core",
            "purl": "pkg:deb/debian/jackson-core?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "2.14.1-1",
            "2.14.1-2",
            "2.14.1-2~deb11u1",
            "2.14.1-2~deb12u1",
            "2.14.1-2~deb13u1",
            "2.18.11-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89425.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.18.11-1"
                }
              ]
            }
          ],
          "package": {
            "name": "jackson-core",
            "purl": "pkg:deb/debian/jackson-core?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2.14.1-1",
            "2.14.1-2",
            "2.14.1-2~deb11u1",
            "2.14.1-2~deb12u1",
            "2.14.1-2~deb13u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89425.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-20T04:00:07.459748262Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-89425"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-89425"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-89425",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 377334,
  "published_at": "2026-09-23T03:17:04.357+00:00"
}