CVE-2026-54518
jackson-databind: @JsonView bypass for unwrapped creator parameters in jackson-databind
Description
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, UnwrappedPropertyHandler.processUnwrappedCreatorProperties() replays buffered JSON into creator parameters but never consults prop.visibleInView(activeView). The normal property-based creator path gates creator properties on the active view, but this unwrapped-creator replay path bypasses that check, so a constructor parameter annotated with both @JsonView(AdminView.class) and @JsonUnwrapped is populated from attacker JSON even when a more restrictive view is active. This vulnerability is fixed in 2.21.4 and 3.1.4.
INFO
Published Date :
June 23, 2026, 10:16 p.m.
Last Modified :
June 27, 2026, 8:49 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 | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update jackson-databind to version 2.21.4 or 3.1.4.
- Verify the security configuration of JSON view handling.
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-2026-54518.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-54518 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-2026-54518
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-54518 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-54518 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. 27, 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) 2.21.0 up to (excluding) 2.21.4 Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b46f58e72c91eea Types: Patch Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/pull/5971 Types: Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/pull/5973 Types: Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3-h962 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-54518', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-24T15:25:24.319631Z'} -
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': '>= 2.21.0, < 2.21.4'}, {'status': 'affected', 'version': '>= 3.0.0, < 3.1.4'}]}] Added Description jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, UnwrappedPropertyHandler.processUnwrappedCreatorProperties() replays buffered JSON into creator parameters but never consults prop.visibleInView(activeView). The normal property-based creator path gates creator properties on the active view, but this unwrapped-creator replay path bypasses that check, so a constructor parameter annotated with both @JsonView(AdminView.class) and @JsonUnwrapped is populated from attacker JSON even when a more restrictive view is active. This vulnerability is fixed in 2.21.4 and 3.1.4. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-863 Added Reference https://github.com/FasterXML/jackson-databind/commit/721fa07ebbd4aab4a659a1a68940878315c3e341 Added Reference https://github.com/FasterXML/jackson-databind/commit/d633bc038f200c1397c07f1a2b46f58e72c91eea Added Reference https://github.com/FasterXML/jackson-databind/pull/5971 Added Reference https://github.com/FasterXML/jackson-databind/pull/5973 Added Reference https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rcqc-6cw3-h962