Answer in brief
CVE-2026-72702 records a Critical severity (CVSS 9.3) vulnerability in Grav CMS before 2.0.16 Origin Validation Bypass via Referer. 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 9.3. 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 | <=2.0.15 | 2.0.16 |
| getgrav/gravgeneric | >=0 <2.0.16 | 2.0.16 |
| getgrav/gravpackagist | >=0 <2.0.16 | 2.0.16 |
Published upstream
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 25, 2026
Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (str_starts_with($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that begins with the victim site's origin (e.g. https://example.com.attacker.tld) can send a request with such a Referer to be treated as same-origin, bypassing the Referer-based origin check.
Quoted source text, attributed separately from HOL analysis.