CVE-2026-41729 Spring Data REST SpEL Injection via Map Key in JSON Patch
Attackers can execute arbitrary SpEL expressions via JSON Patch requests on Map properties, leading to remote code execution in applications using Spring Data REST.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-41729?
CVE-2026-41729 is a high-severity code injection vulnerability in Spring Data REST, published on 9 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-917
Which versions are affected by CVE-2026-41729?
10 open source packages ship an affected version, including org.springframework.data:spring-data-rest-core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.springframework.data:spring-data-rest-core Maven | All versions to 3.7.19 | None |
org.springframework.data:spring-data-rest-core Maven | All versions to 3.7.19 | None |
org.springframework.data:spring-data-rest-core Maven | From 4.3.0 to 4.3.16 | None |
org.springframework.data:spring-data-rest-core Maven | From 4.3.0 to 4.3.16 | None |
org.springframework.data:spring-data-rest-core Maven | From 4.4.0 to 4.4.14 | None |
org.springframework.data:spring-data-rest-core Maven | From 4.4.0 to 4.4.14 | None |
4 more packages
org.springframework.data:spring-data-rest-core Maven | From 4.5.0 | 4.5.12 |
org.springframework.data:spring-data-rest-core Maven | From 4.5.0 | 4.5.12 |
org.springframework.data:spring-data-rest-core Maven | From 5.0.0 | 5.0.6 |
org.springframework.data:spring-data-rest-core Maven | From 5.0.0 | 5.0.6 |
Products include Vmware Spring Data Rest.
How do I fix CVE-2026-41729?
Upgrade org.springframework.data:spring-data-rest-core to a fixed version for your release line: 4.5.12 or 5.0.6.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-41729 being exploited?
There is no known exploitation of CVE-2026-41729 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Spring Data REST
- CVE-2026-41728 Spring Data REST JSON Patch bypasses Jackson read-only property protection on nested objects and collections
- CVE-2026-47849 Spring Data REST allows mutation of identifier and version properties via JSON Patch
- CVE-2026-41730 Spring Data REST exposes persistence-layer internals in error responses
- CVE-2026-41837 Spring Data REST Querydsl integration exposes Jackson-hidden persistent fields as filter keys
- CVE-2021-22047 Exposure of Resource to Wrong Sphere in Spring Data REST
Sources
Also known as CLSA-2026-1781657701, CLSA-2026-1787144764, CLSA-2026-1790246588, GHSA-j388-8rm5-p97f, ROOT-APP-MAVEN-CVE-2026-41729.