CVE-2026-72832

Grav 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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/getgrav/grav/commit/ad9709f865b09b68798fb1ac375b484a8cc1d892
https://github.com/getgrav/grav/security/advisories/GHSA-269c-h76q-8cxw
https://www.vulncheck.com/advisories/grav-before-stored-xss-via-quoted-attribute-bypass
https://github.com/getgrav/grav/security/advisories/GHSA-269c-h76q-8cxw

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-14 12:16

Updated : 2026-09-08 20:32

NVD link : CVE-2026-72832

Mitre link : CVE-2026-72832

CVE.ORG link : CVE-2026-72832

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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