Open Redirect in Getgrav Grav-Plugin-Form
CVE-2026-69087
The Grav form plugin (getgrav/grav-plugin-form) before 9.1.13 contains an open redirect vulnerability. Since v9.1.11, the redirect process action evaluates user-supplied form data inside Twig expressions, and Grav::redirect() accepts external URLs without origin validation. When a form blueprint defines a redirect target such as redirect: "{{ form.value('next') }}" using an attacker-controllable field, an unauthenticated form submitter can supply a value like https://evil.com to cause a 302 redirect to an arbitrary external site, enabling phishing.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Getgrav Grav-Plugin-Form — versions 0, 9.1.13
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-j2j9-gp72-wqvm (vendor-advisory)
- www.vulncheck.com/advisories/grav-form-plugin-before-open-redirect-via-form-val… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-69087?
- CVE-2026-69087 is a medium-severity vulnerability in Getgrav Grav-Plugin-Form, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.5/10. Published 2026-08-03.
- How severe is CVE-2026-69087?
- Medium severity. CVSS v3 base score is 6.5 out of 10.