Spring Data REST SpEL Injection via Map Key in JSON Patch
CVE-2026-41729

8.1HIGH

Key Information:

Vendor

Spring

Status
Spring Data Rest
Vendor
CVE Published:
9 June 2026

What is CVE-2026-41729?

Spring Data REST is vulnerable to SpEL expression injection through map-typed properties when processing JSON Patch (application/json-patch+json) requests. When a persistent entity exposes a Map-typed property, the JSON Pointer path segment used as the map key is embedded directly into a SpEL expression without sanitization or validation.

Affected versions: Spring Data REST 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; 5.0.0 through 5.0.5.

Affected Version(s)

Spring Data REST 3.7.0 < 3.7.20

Spring Data REST 4.3.0 < 4.3.17

Spring Data REST 4.4.0 < 4.4.15

References

https://spring.io/security/cve-2026-41729

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.