CVE-2026-44737 is a medium-severity cross-site scripting (XSS) vulnerability in getgrav/grav (composer), affecting versions < 1.7.49.5. It is fixed in 1.7.49.5.
Summary A Stored Cross-Site Scripting (XSS) vulnerability was identified in the /admin/pages/[page] endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[header][title] parameter. Details Vulnerable Endpoint: GET /admin/pages/[page] Parameter: data[header][title] The application fails to properly validate and sanitize user input in the data[header][title] parameter. As a result, attackers can craft a malicious URL with an XSS payload. When this URL is accessed, the injected script is reflected back in the HTTP response and executed within the context of the victim's browser session. PoC Payload: <img src=1 onerror=alert(1)> Log in to the Grav Admin Panel and navigate to Pages. Create a new page or edit an existing one. Edit title of the page to <img src=1 onerror=alert(1)> <img width="1897" height="700" alt="image" src="https://github.com/user-attachments/assets/77a129ca-5c2b-4743-8c56-c17fa456eefa" /> Save page Open the move function and click on the folder having the payload <img width="1904" height="984" alt="image" src="https://github.com/user-attachments/assets/44f8f88f-76c4-449f-8c4e-11e8e2c51d8f" /> <img width="1902" height="995" alt="image" src="https://github.com/user-attachments/assets/1dc2ef15-e534-4e87-93ea-92bc573af7f1" /> Impact Stored cross-site scripting (XSS) attacks can have serious consequences, including: User actions: Attackers can perform actions on behalf of the user Data theft: Sensitive information such as session cookies can be stolen Account compromise: Attackers may impersonate legitimate users Malicious code execution: Arbitrary JavaScript code can run in the user’s browser Website defacement or misinformation: Malicious output may be injected visually User redirection: Victims may be redirected to phishing or malicious websites By Vu Duc Hieu Contributor Simon Tran
Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.
composer
getgrav/grav (< 1.7.49.5)getgrav/grav → 1.7.49.5 (composer)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
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Already deployed Kodem? See CVE-2026-44737 in your environment →Upgrade getgrav/grav to 1.7.49.5 or later to resolve this vulnerability.
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CVE-2026-44737 is a medium-severity cross-site scripting (XSS) vulnerability in getgrav/grav (composer), affecting versions < 1.7.49.5. It is fixed in 1.7.49.5. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
getgrav/grav (composer) versions < 1.7.49.5 is affected.
Yes. CVE-2026-44737 is fixed in 1.7.49.5. Upgrade to this version or later.
Whether CVE-2026-44737 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Upgrade getgrav/grav to 1.7.49.5 or later.