CVE-2026-59990

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

• https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04 security-advisories@github.com
• https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed security-advisories@github.com
• https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b security-advisories@github.com
• https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214 security-advisories@github.com
• https://github.com/typelevel/jawn/releases/tag/v1.7.0 security-advisories@github.com
• https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3 security-advisories@github.com

The full cvelistV5 record. Download as CVE-2026-59990.json.

{
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-59990",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T19:27:50.740766Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-23T19:27:58.498Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "jawn",
          "vendor": "typelevel",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.7.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting java.lang.OutOfMemoryError is a fatal Scala error that is not ordinarily handled by scala.util.Try or cats.effect.IO, causing denial of service. This issue is fixed in version 1.7.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-09-23T18:41:12.073Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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      "references": [
        {
          "name": "https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3"
        },
        {
          "name": "https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04"
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          "tags": [
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          "url": "https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed"
        },
        {
          "name": "https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b",
          "tags": [
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          "url": "https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b"
        },
        {
          "name": "https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214"
        },
        {
          "name": "https://github.com/typelevel/jawn/releases/tag/v1.7.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/typelevel/jawn/releases/tag/v1.7.0"
        }
      ],
      "source": {
        "advisory": "GHSA-cc4v-rvgp-2pf3",
        "discovery": "UNKNOWN"
      },
      "title": "Jawn: Uncontrolled nesting depth in JSON parser"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-59990",
    "datePublished": "2026-09-23T18:41:12.073Z",
    "dateReserved": "2026-07-07T19:41:00.005Z",
    "dateUpdated": "2026-09-23T19:27:58.498Z",
    "state": "PUBLISHED"
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