CVE-2026-41862 json
Spring Statemachine's Kryo-based persistence backends deserialize persisted state-machine contexts without enforcing a class allowlist
published 2026-06-23 4 mo ago modified 2026-10-25 14 d ago also GHSA-85qj-f5wg-rwp9 , EUVD-2026-38596
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
Spring Statemachine's Kryo-based persistence backends (JPA, MongoDB, Redis and ZooKeeper) deserialise persisted state-machine contexts without enforcing a class allowlist (CWE-502, deserialisation of untrusted data), which can lead to remote code execution inside the application JVM.
Affected versions: Spring Statemachine 4.0.0 through 4.0.1 Spring Statemachine 3.2.0 through 3.2.4
Patch / fix
- maven org.springframework.statemachine:spring-statemachine-kryo 4.0.2
- Spring Spring Statemachine 3.2.5, 4.0.1.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.springframework.statemachine:spring-statemachine-kryo | >=3.2.0, <=3.2.4 >=4.0.0, <4.0.2 |
4.0.2 |
Affected products
- Spring Spring Statemachine
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/spring-attic/spring-statemachine/commit/6b77ea6b729e5346d83e31f36c43818665d67384
web
-
spring.io
/security/cve-2026-41862
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-41862
advisory
-
github.com
/spring-attic/spring-statemachine
package
-
github.com
/spring-attic/spring-statemachine/releases/tag/v4.0.2
web
Sources
- CVE List CVE-2026-41862
- GitHub Advisory GHSA-85qj-f5wg-rwp9
- NVD CVE-2026-41862
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