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GHSA-cgvr-f65r-pjv3
GHSA-cgvr-f65r-pjv3

Author: advisory-database[bot]

advisories/github-reviewed/2026/08/GHSA-cgvr-f65r-pjv3/GHSA-cgvr-f65r-pjv3.json

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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-cgvr-f65r-pjv3",
+  "modified": "2026-09-17T17:28:19Z",
+  "published": "2026-08-14T12:31:26Z",
+  "withdrawn": "2026-09-17T17:28:19Z",
+  "aliases": [],
+  "summary": "Duplicate Advisory: Grav: Stored XSS via quoted-attribute bypass in detectXss",
+  "details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-269c-h76q-8cxw. This link is maintained to preserve external references.\n\n### Original Description\nGrav versions from 1.5.2 through 2.0.12 contain a stored cross-site scripting vulnerability in the Security::detectXss() function (system/src/Grav/Common/Security.php). The event-handler scan is anchored at `<` and uses `[^>]*?`, which cannot cross the first literal `>`; when a `>` appears inside a quoted attribute value the browser keeps the tag open and parses a subsequent event handler (e.g. onerror), so the detector and browser disagree. A page editor without admin.super privileges can save page content such as `<img src=x title=\">\" onerror=alert(document.domain)>`, which is accepted, stored, and executed in the site origin when any visitor (including unauthenticated users) views the page. Fixed in 2.0.13.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
+    },
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Packagist",
+        "name": "getgrav/grav"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "1.5.2"
+            },
+            {
+              "last_affected": "2.0.12"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-269c-h76q-8cxw"
+    },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72832"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/getgrav/grav/commit/ad9709f865b09b68798fb1ac375b484a8cc1d892"
+    },
+    {
+      "type": "WEB",
+      "url": "https://www.vulncheck.com/advisories/grav-before-stored-xss-via-quoted-attribute-bypass"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-79"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-09-17T17:28:19Z",
+    "nvd_published_at": "2026-08-14T12:16:46Z"
+  }
+}