jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties_CVE-2026-54515

5.3 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

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.

Basic Information

ID CVE-2026-54515

Source GitHub_M

Published Jun 23, 2026 at 20:50

Modified Jun 23, 2026 at 20:52

Affected Product

Vendor FasterXML

Product jackson-databind

Version >= 2.8.0, < 2.18.9

Affected Versions FasterXML jackson-databind >= 2.8.0, < 2.18.9
FasterXML jackson-databind >= 2.19.0, < 2.21.5
FasterXML jackson-databind >= 3.1.0, < 3.1.4

CWE Classification

CWE-915

References

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-23T20:50:25.715Z",
    "modified": "2026-06-23T20:52:23.714Z",
    "type": "cve",
    "title": "jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties",
    "source": "GitHub_M",
    "references": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v\nhttps://github.com/FasterXML/jackson-databind/issues/5962\nhttps://github.com/FasterXML/jackson-databind/issues/5964\nhttps://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa",
    "id": "CVE-2026-54515",
    "bulletinFamily": "",
    "cwe": [
        "CWE-915"
    ],
    "cvelist": null,
    "sourceData": "FasterXML jackson-databind >= 2.8.0, < 2.18.9\nFasterXML jackson-databind >= 2.19.0, < 2.21.5\nFasterXML jackson-databind >= 3.1.0, < 3.1.4",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "jackson-databind",
    "version": ">= 2.8.0, < 2.18.9",
    "vendor": "FasterXML",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}