CVE-2026-41728Network attack vector

Nested property modification via JSON Pointer filter bypass

Published Jun 9, 2026 · Updated Jun 9, 2026

Improper access control in affected Spring Data REST releases allows remote attackers to modify read-only nested properties via JSON Patch. The JSON Pointer resolver skips the write-access filter on intermediate segments while traversing an embeddable object, collection, or map. Exposure requires such a container to be Jackson read-only while its inner type lacks per-field restrictions, and the resulting impact is limited to unauthorized data modification.

CVSS severity7.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Improper access control in affected Spring Data REST releases allows remote attackers to modify read-only nested properties via JSON Patch. The JSON Pointer resolver skips the write-access filter on intermediate segments while traversing an embeddable object, collection, or map. Exposure requires such a container to be Jackson read-only while its inner type lacks per-field restrictions, and the resulting impact is limited to unauthorized data modification.

The record

CVE
CVE-2026-41728
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Spring
Product
Spring Data REST
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.7.0 <3.7.20
  2. Affected versionversion=4.3.0 <4.3.17
  3. Affected versionversion=4.4.0 <4.4.15
  4. Affected versionversion=4.5.0 <4.5.12
  5. Affected versionversion=5.0.0 <5.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Data RESTversion=3.7.0 <3.7.20; version=4.3.0 <4.3.17; version=4.4.0 <4.4.15; version=4.5.0 <4.5.12; version=5.0.0 <5.0.6

Published CVSS scores

7.5VMwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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