High severity · published Jun 9, 2026
CVE-2026-41729
Spring Data REST SpEL Injection via Map Key in JSON Patch
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SD
Spring Data REST · Spring
3.7.0 before 3.7.20; 4.3.0 before 4.3.17; 4.4.0 before 4.4.15; 4.5.0 before 4.5.12; 5.0.0 before 5.0.6 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41729
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41729
Vendor Advisory
https://spring.io/security/cve-2026-41729
More from Spring Data REST
7.5
CVE-2026-41728
Spring Data REST JSON Patch bypasses Jackson read-only property protection on nested objects and collections
7.1
CVE-2026-47849
Spring Data REST allows mutation of identifier and version properties via JSON Patch
5.3
CVE-2026-41837
Spring Data REST Querydsl integration exposes Jackson-hidden persistent fields as filter keys
5.3
CVE-2026-41730
Spring Data REST exposes persistence-layer internals in error responses
4.3
CVE-2026-47850
Spring Data REST allows mutation of the version property of immutable aggregates via PUT