What’s Vulnerable › Vulnerabilities

CVE-2026-54517: jackson-databind: @JsonView bypass for setterless creator properties

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-23 · updated 2026-10-25
• Weakness: CWE-863

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, in BeanDeserializer._deserializeUsingPropertyBased, the active-view (@JsonView) filter was applied only to creator properties; the regular property-buffering branch performed no prop.visibleInView(activeView) check. A change making SetterlessProperty.isMerging() return true routed setterless Collection/Map properties through this unguarded path, so a setterless collection annotated with a restricted @JsonView is populated from attacker JSON even when the active view excludes it. This vulnerability is fixed in 2.21.4 and 3.1.4.

Affected products

• FasterXML jackson-databind: from 2.21.0 before 2.21.4; from 3.0.0 before 3.1.4 — fixed in 2.21.4, 3.1.4

How to fix

Upgrade to a fixed version: FasterXML jackson-databind 2.21.4, 3.1.4. Check the vendor advisory for mitigations.

References

• https://github.com/FasterXML/jackson-databind/commit/5bf23edb4221f7dd2ec8e71ff6d26c61640f261d
• https://github.com/FasterXML/jackson-databind/commit/94c5d215b3af1505098c686405d9641f041a9962
• https://github.com/FasterXML/jackson-databind/pull/5969
• https://github.com/FasterXML/jackson-databind/pull/5970
• https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5hh8-q8hv-fr38

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