{"id":"CVE-2026-54515","state":"PUBLISHED","title":"jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties","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.","publishedAt":"2026-06-23T20:50:25.715Z","updatedAt":"2026-06-24T12:22:56.445Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["FasterXML jackson-databind"],"affected":[{"vendor":"FasterXML","product":"jackson-databind","versions":[{"version":">= 2.8.0, < 2.18.9","status":"affected"},{"version":">= 2.19.0, < 2.21.5","status":"affected"},{"version":">= 3.1.0, < 3.1.4","status":"affected"}]}],"references":["https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v","https://github.com/FasterXML/jackson-databind/issues/5962","https://github.com/FasterXML/jackson-databind/issues/5964","https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa"],"weaknesses":["CWE-915"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54515.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54515","state":"PUBLISHED","datePublished":"2026-06-23T20:50:25.715Z","dateUpdated":"2026-06-24T12:22:56.445Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T18:40:01.650Z"},"containers":{"cna":{"title":"jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties","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 — 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."}],"affected":[{"vendor":"FasterXML","product":"jackson-databind","versions":[{"version":">= 2.8.0, < 2.18.9","status":"affected"},{"version":">= 2.19.0, < 2.21.5","status":"affected"},{"version":">= 3.1.0, < 3.1.4","status":"affected"}]}],"references":[{"url":"https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v","name":"https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/FasterXML/jackson-databind/issues/5962","name":"https://github.com/FasterXML/jackson-databind/issues/5962","tags":["x_refsource_MISC"]},{"url":"https://github.com/FasterXML/jackson-databind/issues/5964","name":"https://github.com/FasterXML/jackson-databind/issues/5964","tags":["x_refsource_MISC"]},{"url":"https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa","name":"https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa","tags":["x_refsource_MISC"]}],"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","lang":"en","description":"CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-23T20:52:23.714Z"},"source":{"advisory":"GHSA-5jmj-h7xm-6q6v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-24T12:21:39.803339Z","id":"CVE-2026-54515","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-24T12:22:56.445Z"}}]}}}