Answer in brief
CVE-2025-32442 records a High severity (CVSS 7.5) vulnerability in fastify vulnerable to Body Schema Validation Bypass via Leading Space in Content-Type Header. The current sources do not mark it as known exploited. The current feed maps fastify/fastify (generic), fastify (npm), fastify (npm), fastify (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-32442 records a High severity (CVSS 7.5) vulnerability in fastify vulnerable to Body Schema Validation Bypass via Leading Space in Content-Type Header. The current sources do not mark it as known exploited. The current feed maps fastify/fastify (generic), fastify (npm), fastify (npm), fastify (npm). 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 7.5. 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 fastify/fastify (generic), fastify (npm), fastify (npm), fastify (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| fastify/fastifygeneric | >=5.3.2 <5.8.5 | 5.8.5 |
| fastifynpm | >=5.3.2 <5.8.5 | 5.8.5 |
| fastifynpm | >=5.0.0 <5.3.2 | 5.3.2 |
| fastifynpm | >=4.29.0 <4.29.1 | 4.29.1 |
Published upstream
Apr 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
Impact: Fastify applications using schema.body.content for per-content-type body validation can have validation bypassed entirely by prepending a space to the Content-Type header. The body is still parsed correctly but schema validation is skipped. This is a regression introduced in fastify >= 5.3.2 by the fix for CVE-2025-32442 Patches: Upgrade to fastify v5.8.5 or later. Workarounds: None. Upgrade to the patched version.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. 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 fastify/fastify (generic), fastify (npm), fastify (npm), fastify (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| fastify/fastifygeneric | >=5.3.2 <5.8.5 | 5.8.5 |
| fastifynpm | >=5.3.2 <5.8.5 | 5.8.5 |
| fastifynpm | >=5.0.0 <5.3.2 | 5.3.2 |
| fastifynpm | >=4.29.0 <4.29.1 | 4.29.1 |
Published upstream
Apr 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
Impact: Fastify applications using schema.body.content for per-content-type body validation can have validation bypassed entirely by prepending a space to the Content-Type header. The body is still parsed correctly but schema validation is skipped. This is a regression introduced in fastify >= 5.3.2 by the fix for CVE-2025-32442 Patches: Upgrade to fastify v5.8.5 or later. Workarounds: None. Upgrade to the patched version.
Quoted source text, attributed separately from HOL analysis.