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CVE-2026-41729 Spring CVE debrief

CVE-2026-41729 is a high-severity vulnerability in Spring Data REST, allowing SpEL expression injection through map-typed properties when processing JSON Patch (application/json-patch+json) requests. The vulnerability occurs when a persistent entity exposes a Map-typed property, and the JSON Pointer path segment used as the map key is embedded directly into a SpEL expression without sanitization or validation. This vulnerability affects Spring Data REST versions 3.7.0 through 3.7.19, 4.3.0 through 4.3.16, 4.4.0 through 4.4.14, 4.5.0 through 4.5.11, and 5.0.0 through 5.0.5.

Vendor
Spring
Product
Spring Data REST
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-07-17
Advisory published
2026-06-10
Advisory updated
2026-07-17

Who should care

Users of affected Spring Data REST versions should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability allows an attacker to inject SpEL expressions through map-typed properties when processing JSON Patch requests. This can lead to arbitrary code execution on the server.

Defensive priority

High

Recommended defensive actions

  • Upgrade to a non-vulnerable version of Spring Data REST.
  • Apply patches or updates provided by the vendor.
  • Restrict access to sensitive data and systems.

Evidence notes

The CVE record and NVD detail pages provide additional information about the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-41729 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-41729

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-41729 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-41729

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.