Answer in brief
CVE-2026-61453 records a Medium severity (CVSS 5.1) vulnerability in Grav before 2.0.1 XSS via Twig String Concatenation. 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 5.1. 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 getgrav/grav (composer), getgrav/grav (generic), getgrav/grav (packagist). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| getgrav/gravcomposer | =2.0.0 | 2.0.1 |
| getgrav/gravgeneric | >=0 <2.0.1 | 2.0.1 |
| getgrav/gravpackagist | >=2.0.0 <2.0.1 | 2.0.1 |
Published upstream
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
Grav v2.0.0 contains a cross-site scripting vulnerability (fixed in 2.0.1). The XSS blueprint validator (Security::detectXss()) runs on raw page content before Twig processing. When Twig content processing is enabled (twig_content.process_enabled: true), an attacker with page-write API permission can use Twig's string concatenation operator (~) to dynamically construct event handler names, dangerous tag names, or dangerous protocols at render time (e.g. {% set x = "on" ~ "error" %}). The validator sees only the harmless Twig expression and allows the content, but after Twig rendering the output (rendered via {{ page.content|raw }}) contains an active payload such as <img src=1 onerror=alert(1)>, executing arbitrary JavaScript in visitors' browsers.
Quoted source text, attributed separately from HOL analysis.