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jackson-databind EUVDEUVD-2026-44506

| CVE-2026-59889 MEDIUM
Incorrect Authorization (CWE-863)
2026-07-14 GitHub_M GHSA-5gvw-p9qm-jgwh
Authentication Bypass Jackson Databind Suse
6.5
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
vuln.today AI
7.5 HIGH

Archetypal exploit targets a public registration endpoint requiring no authentication; view-bypass is the sole integrity impact with no confidentiality or availability consequence.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

4
Source Code Evidence Fetched
Jul 22, 2026 - 14:02 vuln.today
Analysis Generated
Jul 22, 2026 - 14:02 vuln.today
Patch available
Jul 14, 2026 - 23:20 EUVD
CVE Published
Jul 14, 2026 - 19:57 cve.org
MEDIUM 6.5

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 5,222 maven packages depend on com.fasterxml.jackson.core:jackson-databind (1,712 direct, 3,567 indirect)
  • 374 maven packages depend on tools.jackson.core:jackson-databind (105 direct, 269 indirect)

Ecosystem-wide dependent count for version 2.21.0 and other introduced versions.

DescriptionCVE.org

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.18.0 until 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1, UnwrappedPropertyHandler.processUnwrapped() replays buffered JSON for a @JsonUnwrapped property and calls prop.deserializeAndSet() without a prop.visibleInView(ctxt.getActiveView()) guard, allowing a property annotated with both @JsonView and @JsonUnwrapped to be written from attacker JSON under a less-privileged active view. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.

AnalysisAI

jackson-databind's @JsonView authorization guard is bypassable on deserialization when a property carries both @JsonView and @JsonUnwrapped annotations, allowing an authenticated or unauthenticated attacker to mass-assign privileged fields through a less-privileged active view. Affected are com.fasterxml.jackson.core:jackson-databind 2.18.0-2.18.8, 2.21.0-2.21.4, 2.22.0, and tools.jackson.core:jackson-databind 3.0.0-3.1.4, 3.2.0. A publicly available proof-of-concept demonstrates the bypass; SSVC reports no confirmed active exploitation at time of analysis, and EPSS sits at 0.42% (34th percentile), indicating low current threat velocity despite the high-integrity impact.

Technical ContextAI

jackson-databind (Maven: com.fasterxml.jackson.core:jackson-databind, CPE: cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:*) is the core JSON data-binding layer of the Jackson Data Processor, ubiquitous in Java/Spring ecosystems. The root cause (CWE-863 - Incorrect Authorization) lies in UnwrappedPropertyHandler.processUnwrapped(): when replaying buffered JSON for an @JsonUnwrapped property it calls prop.deserializeAndSet() without first evaluating the prop.visibleInView(ctxt.getActiveView()) guard. This guard was correctly applied in the parallel method processUnwrappedCreatorProperties() as part of prior fix GHSA-rcqc-6cw3-h962, and is also applied by BeanDeserializer.deserializeWithUnwrapped for directly-matched properties. The missing guard means that a container property annotated @JsonView(AdminView) @JsonUnwrapped has its sub-fields populated from untrusted JSON even when the ObjectMapper is operating under a more restrictive view such as PublicView. The fix (PR #6056, commit d627a8a) adds an activeView != null check and a !prop.visibleInView(activeView) short-circuit continue inside the iteration loop in processUnwrapped().

RemediationAI

The primary remediation is to upgrade jackson-databind to a fixed release: 2.18.9, 2.21.5, or 2.22.1 for the 2.x line, and 3.1.5 or 3.2.1 for the 3.x line. The patch is available via Maven Central and the fix is confirmed in PR #6056 (https://github.com/FasterXML/jackson-databind/pull/6056) and commit d627a8a86fcb062429282f79f3f256f181ed2c7b. For applications that cannot upgrade immediately, a concrete compensating control is to avoid combining @JsonUnwrapped with @JsonView on the same container property; instead, separate the privileged nested object into a non-unwrapped property so the existing BeanDeserializer view gate applies correctly. A second workaround is to perform an explicit allowlist check on sensitive fields in a custom deserializer or @JsonCreator rather than relying solely on @JsonView for write-side authorization - this eliminates the dependency on the missing library-level gate. Note that DEFAULT_VIEW_INCLUSION=true (the 2.x default) means all non-annotated properties are included regardless of view; applications on 3.x with DEFAULT_VIEW_INCLUSION=false have a narrower exposure surface but are still affected where the specific @JsonView + @JsonUnwrapped combination is present. Full advisory: https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5gvw-p9qm-jgwh.

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
openSUSE Leap 16.0 Fixed
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected

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EUVD-2026-44506 vulnerability details – vuln.today
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