Answer in brief
CVE-2026-41855 records a High severity (CVSS 8.1) vulnerability in Spring Framework Unsafe Deserialization via Jackson JMS Converters. The current sources do not mark it as known exploited. The current feed maps Spring/Spring Framework (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Spring/Spring Framework (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Spring/Spring Frameworkgeneric | >=7.0.0 <7.0.7.1 || >=6.2.0 <6.2.18.1 || >=6.1.0 <6.1.28 || >=5.3.0 <5.3.49 | 7.0.7.1, 6.2.18.1, 6.1.28, 5.3.49 |
Published upstream
Jun 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 27, 2026
In an untrusted JMS environment, org.springframework.jms.support.converter.MappingJackson2MessageConverter and org.springframework.jms.support.converter.JacksonJsonMessageConverter allow arbitrary class instantiation, which can lead to unauthorized actions via gadget class deserialization. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-41855 records a High severity (CVSS 8.1) vulnerability in Spring Framework Unsafe Deserialization via Jackson JMS Converters. The current sources do not mark it as known exploited. The current feed maps Spring/Spring Framework (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Spring/Spring Framework (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Spring/Spring Frameworkgeneric | >=7.0.0 <7.0.7.1 || >=6.2.0 <6.2.18.1 || >=6.1.0 <6.1.28 || >=5.3.0 <5.3.49 | 7.0.7.1, 6.2.18.1, 6.1.28, 5.3.49 |
Published upstream
Jun 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 27, 2026
In an untrusted JMS environment, org.springframework.jms.support.converter.MappingJackson2MessageConverter and org.springframework.jms.support.converter.JacksonJsonMessageConverter allow arbitrary class instantiation, which can lead to unauthorized actions via gadget class deserialization. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
Quoted source text, attributed separately from HOL analysis.