The G/PGP (GPG) Plugin 2.0, and 2.1dev before 20060912, for Squirrelmail allows remote attackers to execute arbitrary commands via shell metacharacters in the messageSignedText parameter to the gpg_check_sign_pgp_mime function in gpg_hook_functions.php. NOTE: a parameter value can be set in the contents of an e-mail message.
Conclusion & alert: CVE-2007-3778 is rated Moderate Risk (59.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.18%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-03 | 1.68% | 2.18% | +0.50% |
| 2 | 2025-09-20 | 1.45% | 1.68% | +0.23% |
| 3 | 2025-08-09 | — | 1.45% | — |
Full EPSS history (16 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| squirrelmail | gpg_plugin | 2.0 | cpe:2.3:a:squirrelmail:gpg_plugin:2.0:*:*:*:*:*:*:* |
| squirrelmail | gpg_plugin | 2.1_dev | cpe:2.3:a:squirrelmail:gpg_plugin:2.1_dev:*:*:*:*:*:*:* |