Information disclosure in Getgrav Grav
CVE-2026-124434
Grav Lightbox Gallery plugin 1.1.0 before 1.3.2 on Grav 2.x calls any medium method named in image, thumb or thumb_options shortcode values without core's allowed media action check. A page editor can chain addMetaFile with value, toYaml or toJson to read server-readable YAML files, such as account password hashes, 2FA secrets and API keys, into a publicly viewable page.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-jq4h-4q3q-hr32) (vendor-advisory)
- VulnCheck Advisory: Grav Lightbox Gallery 1.1.0 before 1.3.2 File Read via Shortcode Media Actions (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124434?
- CVE-2026-124434 is a high-severity vulnerability in Getgrav Grav, classified under Information Disclosure. CVSS score: 7.1/10. Published 2026-11-08.
- How severe is CVE-2026-124434?
- High severity. CVSS v3 base score is 7.1 out of 10.