CVE-2026-54515
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.
INFO
Published Date :
June 23, 2026, 9:17 p.m.
Last Modified :
June 29, 2026, 1:38 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update jackson-databind to version 2.18.9 or later.
- Update jackson-databind to version 2.21.5 or later.
- Update jackson-databind to version 3.1.4 or later.
Public PoC/Exploit Available at Github
CVE-2026-54515 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-54515.
| URL | Resource |
|---|---|
| https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa | Patch |
| https://github.com/FasterXML/jackson-databind/issues/5962 | Issue Tracking |
| https://github.com/FasterXML/jackson-databind/issues/5964 | Issue Tracking Patch |
| https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-54515 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-54515
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Java
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-54515 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-54515 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 29, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.1.4 *cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* versions from (including) 2.19.0 up to (excluding) 2.21.5 *cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (excluding) 2.18.9 *cpe:2.3:a:fasterxml:jackson-databind:2.22.0:*:*:*:*:*:*:* Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa Types: Patch Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/issues/5962 Types: Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/issues/5964 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-54515', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-24T12:21:39.803339Z'} -
New CVE Received by [email protected]
Jun. 23, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'FasterXML', 'product': 'jackson-databind', 'versions': [{'status': 'affected', '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'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-915 Added Reference https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5fa Added Reference https://github.com/FasterXML/jackson-databind/issues/5962 Added Reference https://github.com/FasterXML/jackson-databind/issues/5964 Added Reference https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6v