CVE-2026-54515 (GCVE-0-2026-54515)

Vulnerability from cvelistv5 – Published: 2026-06-23 20:50 – Updated: 2026-06-23 20:52
VLAI
Title
jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties
Summary
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, in BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed. The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map — restoring every property _handleByNameInclusion had just removed. The ignored property becomes writable again. This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Assigner
References
Impacted products
Vendor Product Version
FasterXML jackson-databind Affected: >= 2.8.0, < 2.18.9
Affected: >= 2.19.0, < 2.21.5
Affected: >= 3.1.0, < 3.1.4
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "jackson-databind",
          "vendor": "FasterXML",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.8.0, \u003c 2.18.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.19.0, \u003c 2.21.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.1.0, \u003c 3.1.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, in BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed. The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map \u2014 restoring every property _handleByNameInclusion had just removed. The ignored property becomes writable again. This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-915",
              "description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-23T20:52:23.714Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/issues/5962",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/issues/5962"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/issues/5964",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/issues/5964"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa"
        }
      ],
      "source": {
        "advisory": "GHSA-5jmj-h7xm-6q6v",
        "discovery": "UNKNOWN"
      },
      "title": "jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54515",
    "datePublished": "2026-06-23T20:50:25.715Z",
    "dateReserved": "2026-06-15T18:40:01.650Z",
    "dateUpdated": "2026-06-23T20:52:23.714Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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