Answer in brief
CVE-2026-72583 records a Unknown severity vulnerability in fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload. The current sources do not mark it as known exploited. The current feed maps fastschema/fastschema (generic), fastschema/fastschema (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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 fastschema/fastschema (generic), fastschema/fastschema (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| fastschema/fastschemageneric | >=0 <0.15.1 | 0.15.1 |
| fastschema/fastschemageneric | 0 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
A stored cross-site scripting (XSS) vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-72583 records a Unknown severity vulnerability in fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload. The current sources do not mark it as known exploited. The current feed maps fastschema/fastschema (generic), fastschema/fastschema (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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 fastschema/fastschema (generic), fastschema/fastschema (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| fastschema/fastschemageneric | >=0 <0.15.1 | 0.15.1 |
| fastschema/fastschemageneric | 0 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
A stored cross-site scripting (XSS) vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check.
Quoted source text, attributed separately from HOL analysis.