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Fencer Vulns
high 8.1

CVE-2026-41729 json

Spring Data REST SpEL Injection via Map Key in JSON Patch

published 2026-06-09 5 mo ago modified 2026-08-12 2 mo ago also GHSA-j388-8rm5-p97f , EUVD-2026-35906

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.springframework.data:spring-data-rest-core 4.5.12, 5.0.6
  • Spring Spring Data REST 3.7.20, 4.3.17, 4.4.15, 4.5.12, 5.0.6

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
GitHub 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven org.springframework.data:spring-data-rest-core
>=5.0.0, <5.0.6
>=4.5.0, <4.5.12
>=4.4.0, <=4.4.14
>=4.3.0, <=4.3.16
<=3.7.19
5.0.6
4.5.12

Affected products

  • Spring Spring Data REST

Classification

Weakness
  • CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.