CVE-2026-58205
HighCVSS 8.1Summary
In GRR prior to version 4.5.0, `maj.php` reflects the `forcemaj` parameter without adequate escaping when installation files remain accessible. Removal of these files is not automatic. An attacker can craft a URL that executes arbitrary JavaScript in a victim's browser when the victim accesses it.
Risk Assessment
Reflected XSS can enable phishing, redirection to malicious sites, cookie theft, and session hijacking because the authentication cookie is not `HttpOnly`.
Recommendation
Update GRR to version 4.5.0 or later, which fixes this vulnerability.
Other vulnerabilities in GRR
See all- CVE-2026-58257High
In GRR prior to version 4.5.0, the database restoration feature fails to enforce or validate file paths. A user with administrator privileges can manipulate input to read or delete arbitrary files on the server, causing sensitive file disclosure and denial of service through file deletion. The impact is amplified when the server runs with elevated privileges.
- CVE-2026-58256Critical
In GRR prior to version 4.5.0, an administrator can inject malicious PHP through LDAP connector configuration parameters such as `ldap_filter`, poisoning `/personnalisation/config_ldap.inc.php` and enabling remote code execution. The administrator must first successfully connect to an LDAP server, which can be attacker-controlled, and then submit malicious input on the subsequent connector settings page.
Original NVD description (English source)
GRR is a resource management and reservation application. Prior to version 4.5.0, `maj.php` reflects the `forcemaj` parameter without adequate escaping when installation files remain accessible. Removal of these files is not automatic. An attacker can craft a URL that executes arbitrary JavaScript in a victim's browser when the victim accesses it. This reflected cross-site scripting can enable phishing, redirection to malicious sites, cookie theft and session hijacking because the authentication cookie is not `HttpOnly`. This issue is fixed in version 4.5.0.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS