Answer in brief
CVE-2026-75827 records a Critical severity (CVSS 8.8) vulnerability in Grav before 2.0.15 Arbitrary File Write via error_log. The current sources do not mark it as known exploited. The current feed maps getgrav/grav (composer), getgrav/grav (generic), getgrav/grav (packagist). 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 8.8. 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 getgrav/grav (composer), getgrav/grav (generic), getgrav/grav (packagist). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| getgrav/gravcomposer | <=2.0.14 | 2.0.15 |
| getgrav/gravgeneric | >=0 <2.0.15 | 2.0.15 |
| getgrav/gravpackagist | >=0 <2.0.15 | 2.0.15 |
Published upstream
Aug 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 18, 2026
Grav before 2.0.15 contains an arbitrary file write vulnerability in the Blueprint dynamic-data bare-function validation that uses an incomplete denylist instead of a positive allowlist. Attackers with page-edit or blueprint-config access can invoke the error_log function through a data directive to append PHP payloads to web-accessible files, achieving remote code execution.
Quoted source text, attributed separately from HOL analysis.