RCE in Trilbymedia Grav-Plugin-Git-Sync
CVE-2026-109318
Grav Git Sync 1.0.2 through 3.4.12 contains a command injection vulnerability that allows authenticated content editors to execute OS commands by injecting shell substitutions into profile fields. When the gravuser or gravfull author mode is enabled, attackers can set a malicious username, full name, or email that reaches PHP exec() via git commit --author, running commands as the web-server account.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
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.com/getgrav/grav/security/advisories/GHSA-c89w-55m3-fmf7 (vendor-advisory, third-party-advisory)
- www.vulncheck.com/advisories/grav-git-sync-1.0.2-through-3.4.12-command-injecti… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109318?
- CVE-2026-109318 is a high-severity vulnerability in Trilbymedia Grav-Plugin-Git-Sync, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-12.
- How severe is CVE-2026-109318?
- High severity. CVSS v3 base score is 8.8 out of 10.